CVE-2026-56290

CRITICALNVD 9.89.8
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-07-07), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: CISA Known Exploited Vulnerabilities catalog, EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictMitigate nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV) — the reason this is sooner than the SSVC decision on this page at low mission impact
CISA-KEV: ExploitedEPSS PROB: 31%CVSS: 9.8Exploit: Public PoCExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 - The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
99
EG Risk 99/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation100% × 40%
Fixed at 100% for a CISA KEV listing: EchelonGraph's rule.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Attend at low mission impact; Act at medium or high.
Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that sooner than your standard update timelines at low mission impact and as soon as possible at medium or high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
31%
EPSS %ILE
98th
KEV
⚠ Exploited

SSVC (CISA's decision table, applied by EchelonGraph)Attend at low mission impact; Act at medium or high.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that sooner than your standard update timelines at low mission impact and as soon as possible at medium or high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days & forensic triage if the affected system is publicly exposed; 3 days & forensic triage if it is not.

In CISA KEV yes (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

CISA required action“Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.”

Quoted verbatim from CISA's Known Exploited Vulnerabilities catalog. CISA directs it at US federal civilian executive branch agencies under Binding Operational Directive (BOD) 26-04, which replaced BOD 22-01 on 10 June 2026; it is not EchelonGraph's advice. CISA's notes: https://www.joomlack.fr/en/joomla-extensions/page-builder-ck · https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk · https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk · https://nvd.nist.gov/vuln/detail/CVE-2026-56290

Published

June 29, 2026

Last Modified

October 8, 2026

Advisory Details (4)

Auto-updated Oct 8, 2026
⚠️ Actively exploited (CISA KEV, CISA Vulnrichment). Fix referenced — no release confirmed yet.
Web page

Joomlack - Extensions et tutoriels Joomla! - JoomlaCK - Extensions et tutoriels Joomla!

https://www.joomlack.fr/
CISA🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56290
Web page

PageBuilder CK RCE - CVE-2026-56290 | mySites.guru

https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce/
Web page

Nouvelle version de pbck et joomla 3 - JoomlaCK forum

https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3

Vendor Advisories for CVE-2026-56290(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 52× in last 7d / 241× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 838 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 738 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 31% · 98th percentile
  2. 2026-10-13 08:39 UTCEG score recompute
  3. 2026-10-13 08:39 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 31% · 98th percentile
  5. 2026-10-12 15:55 UTCEG score recompute
  6. 2026-10-12 07:47 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-12 03:48 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-11 23:51 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-11 19:54 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-10-11 19:38 UTCEG score recompute
  11. 2026-10-11 16:53 UTCEG score recompute
  12. 2026-10-11 15:57 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-11 14:16 UTCEG score recompute
  14. 2026-10-11 13:49 UTCEPSS rescoreEPSS 31% · 98th percentile
  15. 2026-10-11 12:00 UTCEG score recompute
  16. 2026-10-11 12:00 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-11 08:03 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-10-11 04:06 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-10-11 00:09 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-10 20:12 UTCEG score recompute
  21. 2026-10-10 20:12 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  22. 2026-10-10 20:00 UTCEPSS rescoreEPSS 31% · 98th percentile
  23. 2026-10-10 16:15 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-10 12:18 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-10 08:22 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
Show 75 more
  1. 2026-10-10 04:24 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-10-10 00:27 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  3. 2026-10-09 20:31 UTCEG score recompute
  4. 2026-10-09 20:30 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS 31% · 98th percentile
  6. 2026-10-09 16:33 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-09 12:36 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-09 08:40 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-09 04:43 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-10-09 00:46 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-10-08 20:50 UTCEG score recompute
  12. 2026-10-08 20:50 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 31% · 98th percentile
  14. 2026-10-08 16:53 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-10-08 12:57 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-10-08 08:58 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-08 05:02 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-10-08 03:12 UTCEG score recompute
  19. 2026-10-08 03:12 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 31% · 98th percentile
  21. 2026-10-07 23:16 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  22. 2026-10-07 19:19 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-07 18:27 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-07 16:52 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-07 12:55 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  26. 2026-10-07 08:58 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  27. 2026-10-07 05:01 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  28. 2026-10-07 01:04 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  29. 2026-10-06 21:07 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  30. 2026-10-06 17:11 UTCEG score recompute
  31. 2026-10-06 17:11 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  32. 2026-10-06 15:18 UTCEPSS rescoreEPSS 31% · 98th percentile
  33. 2026-10-06 13:15 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  34. 2026-10-06 09:18 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  35. 2026-10-06 05:21 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  36. 2026-10-06 01:24 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  37. 2026-10-05 21:27 UTCEG score recompute
  38. 2026-10-05 21:27 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  39. 2026-10-05 17:43 UTCEPSS rescoreEPSS 31% · 98th percentile
  40. 2026-10-05 17:28 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  41. 2026-10-05 13:31 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  42. 2026-10-05 09:35 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  43. 2026-10-05 05:39 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  44. 2026-10-05 01:42 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  45. 2026-10-04 21:46 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  46. 2026-10-04 17:49 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  47. 2026-10-04 13:53 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  48. 2026-10-04 09:57 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  49. 2026-10-04 06:01 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  50. 2026-10-04 02:04 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  51. 2026-10-03 22:08 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  52. 2026-10-03 18:11 UTCEG score recompute
  53. 2026-10-03 18:11 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  54. 2026-10-03 14:26 UTCEPSS rescoreEPSS 31% · 98th percentile
  55. 2026-10-03 14:14 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  56. 2026-10-03 10:17 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  57. 2026-10-03 06:20 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  58. 2026-10-03 02:23 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  59. 2026-10-02 22:27 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  60. 2026-10-02 18:30 UTCEG score recompute
  61. 2026-10-02 18:30 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  62. 2026-10-02 17:56 UTCEPSS rescoreEPSS 31% · 98th percentile
  63. 2026-10-02 14:33 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  64. 2026-10-02 10:36 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  65. 2026-10-02 06:36 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  66. 2026-10-02 02:38 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  67. 2026-10-01 22:40 UTCEG score recompute
  68. 2026-10-01 22:39 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  69. 2026-10-01 19:50 UTCEPSS rescoreEPSS 31% · 98th percentile
  70. 2026-10-01 18:43 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  71. 2026-10-01 14:46 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  72. 2026-10-01 10:49 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  73. 2026-10-01 06:53 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  74. 2026-10-01 02:56 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8
  75. 2026-09-30 22:59 UTCGHSA enrichmentGHSA-gxrr-wfg5-xqqf · GitHub severity CRITICAL · GitHub CVSS 9.8

Publicly available exploits

(5 references)

Public exploit code is referenced for this CVE (1 Exploit-DB entry, 3 GitHub PoCs), as is 1 Nuclei detection template. A detection template checks whether a system is affected; it is not necessarily exploit code. No release with the fix is confirmed, so defenders should restrict or isolate affected systems accordingly until one is applied.

  • Nucleihttp/cves/2026/CVE-2026-56290.yaml
    Published Jul 21, 2026

    Page Builder CK <= 3.5.10 - Unauthenticated Arbitrary File Upload

    Open source ↗
  • Exploit-DBEDB-52626
    Published Jul 8, 2026

    Joomla Page Builder CK 3.5.10 - Arbitrary File Upload

    Open source ↗
  • GitHub PoCJenderal92/CVE-2026-56290
    Published Jul 8, 2026

    CVE-2026-56290 - Mass Exploit for Joomla Com_pagebuilderck component (Unrestricted File Upload → RCE). Multi-threaded, automatic CSRF bypass, PHP shell uploader.

    Open source ↗
  • GitHub PoCshinthink/pbck-exploit
    Published Jul 4, 2026

    📤 Mass exploitation framework for CVE-2026-56290 — Page Builder CK Joomla unauthenticated file upload to RCE

    Open source ↗
  • GitHub PoCsagsooz/PageBuilderCK-CVE-2026-56290-Exploit
    Published Jul 3, 2026

    Page Builder CK for Joomla - Unauthenticated SSRF / Remote File Write leading to PHP execution Exploiter

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2026-56290?
CVE-2026-56290 is a critical-severity vulnerability; its CVE record was published on June 29, 2026. Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 - The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
When was the CVE record for CVE-2026-56290 published?
The CVE record for CVE-2026-56290 was published on June 29, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2026-56290 actively exploited?
Yes. CISA added CVE-2026-56290 to the Known Exploited Vulnerabilities catalog on July 7, 2026, affecting Joomlack Page Builder. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
What is the CVSS score of CVE-2026-56290?
CVE-2026-56290 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2026-56290?
CVE-2026-56290 affects Joomlack Page Builder.
How do I remediate CVE-2026-56290?
A fix for CVE-2026-56290 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-56290 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-56290

Explore →

Is Your Infrastructure Affected by CVE-2026-56290?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs