CVE-2026-48946

MEDIUMPre-NVD 6.36.3
EchelonGraph scoreMEDIUM confidence

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

Score 6.3 from GitHub Security Advisory published 2026-06-25. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
6.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.3Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The K2 frontend article-attachment upload path accepts files whose extension is .php, and Apache's standard mod_php matches \.php$ and executes them under the K2 web user. A K2 Author can upload a shell.php, then fetch /media/k2/attachments/shell.php and execute arbitrary PHP code in the web server's context.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

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)
Severity63% × 45%
The EG Score, 6.3 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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

Published

June 25, 2026

Last Modified

June 28, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
No fix on record yet.
Web page

K2 | The powerful content extension for Joomla! developed by JoomlaWorks

https://www.getk2.org/

Vendor Advisories for CVE-2026-48946(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 30× 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 181 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 81 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 0.3% · 19th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  3. 2026-10-12 16:00 UTCEG score recompute
  4. 2026-10-11 19:43 UTCEG score recompute
  5. 2026-10-11 16:57 UTCEG score recompute
  6. 2026-10-11 14:22 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  17. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  18. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  19. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  20. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  21. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  22. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-09-23 08:46 UTCEG score recompute
  24. 2026-09-23 08:46 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  25. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
Show 75 more
  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-09-18 07:23 UTCEG score recompute
  3. 2026-09-18 07:23 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  4. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  5. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  6. 2026-09-14 01:19 UTCEG score recompute
  7. 2026-09-14 01:19 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  8. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  9. 2026-09-12 15:48 UTCEG score recompute
  10. 2026-09-12 15:48 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  11. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  12. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  13. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  14. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  15. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  16. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  17. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  18. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  19. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-08-30 19:34 UTCEG score recompute
  21. 2026-08-30 19:34 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  22. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  23. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  24. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  25. 2026-08-27 23:22 UTCEG score recompute
  26. 2026-08-27 23:22 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  28. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  29. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  30. 2026-08-24 13:10 UTCEG score recompute
  31. 2026-08-24 13:10 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  32. 2026-08-23 11:33 UTCEG score recompute
  33. 2026-08-23 11:33 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  34. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  35. 2026-08-22 10:31 UTCEG score recompute
  36. 2026-08-22 10:30 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  37. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  38. 2026-08-21 08:07 UTCEG score recompute
  39. 2026-08-21 08:07 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  40. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  41. 2026-08-20 07:04 UTCEG score recompute
  42. 2026-08-20 07:04 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  43. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  44. 2026-08-19 01:24 UTCEG score recompute
  45. 2026-08-19 01:24 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  46. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  47. 2026-08-17 04:31 UTCEG score recompute
  48. 2026-08-17 04:31 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  49. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  50. 2026-08-16 03:29 UTCEG score recompute
  51. 2026-08-16 03:29 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  52. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  53. 2026-08-15 02:27 UTCEG score recompute
  54. 2026-08-15 02:27 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  55. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  56. 2026-08-14 01:25 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  57. 2026-08-13 00:23 UTCEG score recompute
  58. 2026-08-13 00:23 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  59. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  60. 2026-08-11 23:20 UTCEG score recompute
  61. 2026-08-11 23:20 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  62. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  63. 2026-08-10 22:18 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  64. 2026-08-09 21:16 UTCEG score recompute
  65. 2026-08-09 21:16 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  66. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  67. 2026-08-08 20:14 UTCEG score recompute
  68. 2026-08-08 20:14 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  69. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  70. 2026-08-07 19:11 UTCEG score recompute
  71. 2026-08-07 19:11 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  72. 2026-08-06 18:09 UTCEG score recompute
  73. 2026-08-06 18:09 UTCGHSA enrichmentGHSA-hmpj-wp8r-7h2p · GitHub CVSS 6.3
  74. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  75. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-48946?
CVE-2026-48946 is a medium-severity vulnerability; its CVE record was published on June 25, 2026. The K2 frontend article-attachment upload path accepts files whose extension is .php, and Apache's standard mod_php matches \.php$ and executes them under the K2 web user. A K2 Author can upload a shell.php, then fetch /media/k2/attachments/shell.php and execute arbitrary PHP code in the web…
When was the CVE record for CVE-2026-48946 published?
The CVE record for CVE-2026-48946 was published on June 25, 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 June 28, 2026; the record at its source may have been updated since.
Is CVE-2026-48946 actively exploited?
CVE-2026-48946 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (19th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48946?
CVE-2026-48946 has a CVSS v3.1 base score of 6.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-48946?
No fix for CVE-2026-48946 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-48946 are linked in the Vendor Advisories panel on this page.

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