CVE-2026-58655

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. The CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Elevated
8.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists getgrav grav versions before 1.4.0 as affected, and getgrav grav versions 1.4.0 as unaffected. No release containing a fix is confirmed on record.

The bundled Grav Flex Objects plugin (getgrav/grav-plugin-flex-objects) before 1.4.0 contains a stored server-side template injection vulnerability. When rendering dynamic collection or object titles, the plugin passes user-controlled frontmatter values (page.header.flex.collection.title or page.header.flex.object.title) to Twig's template_from_string(), causing them to be evaluated as Twig code rather than treated as text. This path bypasses Grav's Security::cleanDangerousTwig() sanitization. An attacker who can control the title frontmatter of a publicly reachable Flex Objects page can achieve arbitrary Twig execution and escalate to remote command execution via access to internal Grav services such as the scheduler.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

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)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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
1.1%
EPSS %ILE
65th
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 public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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

July 15, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 15, 2026
No fix on record yet. Sources: github.
Web page

Grav Flex Objects - Server-Side Template Injection via Dynamic Titles | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-flex-objects-server-side-template-injection-via-dynamic-titles
GitHub advisoryMentions a patch (unverified)

Flex Objects stored Twig SSTI in dynamic titles can lead to remote code execution · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-623v-m3c4-3pw8

Vendor Advisories for CVE-2026-58655(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 / 40× 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 229 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 129 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 1.1% · 65th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  3. 2026-10-12 15:53 UTCEG score recompute
  4. 2026-10-11 19:36 UTCEG score recompute
  5. 2026-10-11 16:51 UTCEG score recompute
  6. 2026-10-11 14:14 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  18. 2026-10-01 12:42 UTCEG score recompute
  19. 2026-10-01 12:42 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  21. 2026-09-29 15:22 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  23. 2026-09-28 08:48 UTCEG score recompute
  24. 2026-09-28 08:48 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.1% · 64th percentile
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  2. 2026-09-24 14:04 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  3. 2026-09-24 08:55 UTCEG score recompute
  4. 2026-09-24 08:55 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  5. 2026-09-23 17:54 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  6. 2026-09-23 03:23 UTCEG score recompute
  7. 2026-09-23 03:23 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  8. 2026-09-20 20:16 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-09-18 19:28 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  10. 2026-09-18 04:47 UTCEG score recompute
  11. 2026-09-18 04:47 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  12. 2026-09-17 19:31 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  13. 2026-09-16 14:08 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  14. 2026-09-16 05:15 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  15. 2026-09-15 03:11 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  16. 2026-09-14 10:23 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-09-13 23:13 UTCEG score recompute
  18. 2026-09-13 23:13 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-09-13 16:47 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  20. 2026-09-13 07:17 UTCEG score recompute
  21. 2026-09-13 07:17 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  22. 2026-09-12 13:05 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-09-11 21:47 UTCEG score recompute
  24. 2026-09-11 21:47 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-09-11 14:53 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  26. 2026-09-10 09:35 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  27. 2026-09-08 22:01 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  28. 2026-09-08 00:58 UTCEG score recompute
  29. 2026-09-08 00:58 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  30. 2026-09-07 16:01 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  31. 2026-09-06 13:47 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  32. 2026-09-06 13:29 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  33. 2026-09-05 20:52 UTCEG score recompute
  34. 2026-09-05 20:52 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  35. 2026-09-04 05:07 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  36. 2026-09-02 14:12 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  37. 2026-09-01 13:54 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  38. 2026-09-01 04:40 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  39. 2026-08-31 03:05 UTCEG score recompute
  40. 2026-08-31 03:05 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  41. 2026-08-30 19:17 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  42. 2026-08-30 16:06 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  43. 2026-08-30 03:56 UTCEG score recompute
  44. 2026-08-30 03:56 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  45. 2026-08-30 01:22 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  46. 2026-08-28 21:42 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  47. 2026-08-27 23:54 UTCEG score recompute
  48. 2026-08-27 23:54 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  49. 2026-08-27 14:25 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  50. 2026-08-27 12:44 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  51. 2026-08-26 23:13 UTCEG score recompute
  52. 2026-08-26 23:13 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  53. 2026-08-26 14:46 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  54. 2026-08-26 12:01 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  55. 2026-08-25 23:57 UTCEG score recompute
  56. 2026-08-25 23:57 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  57. 2026-08-25 13:49 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  58. 2026-08-25 12:38 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  59. 2026-08-25 01:41 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  60. 2026-08-24 14:44 UTCEG score recompute
  61. 2026-08-24 14:44 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  62. 2026-08-24 03:46 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  63. 2026-08-23 16:01 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  64. 2026-08-23 05:04 UTCEG score recompute
  65. 2026-08-23 05:04 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  66. 2026-08-23 00:19 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  67. 2026-08-22 18:05 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  68. 2026-08-22 07:07 UTCEG score recompute
  69. 2026-08-22 07:07 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  70. 2026-08-21 23:49 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  71. 2026-08-21 20:10 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  72. 2026-08-21 09:13 UTCEG score recompute
  73. 2026-08-21 09:13 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8
  74. 2026-08-20 22:55 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  75. 2026-08-20 22:15 UTCGHSA enrichmentGHSA-mpq7-q5x9-rf83 · GitHub severity HIGH · GitHub CVSS 8.8

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Frequently asked(5)

What is CVE-2026-58655?
CVE-2026-58655 is a high-severity vulnerability; its CVE record was published on July 15, 2026. The bundled Grav Flex Objects plugin (getgrav/grav-plugin-flex-objects) before 1.4.0 contains a stored server-side template injection vulnerability. When rendering dynamic collection or object titles, the plugin passes user-controlled frontmatter values (page.header.flex.collection.title or…
When was CVE-2026-58655 made public?
CVE-2026-58655 was made public on June 22, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on July 15, 2026. EchelonGraph's copy of the record carries a last-modified date of July 28, 2026; the record at its source may have been updated since.
Is CVE-2026-58655 actively exploited?
CVE-2026-58655 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (65th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58655?
CVE-2026-58655 has a CVSS base score of 8.8 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-58655?
No fix for CVE-2026-58655 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 CVE record's CNA (VulnCheck) lists getgrav grav versions before 1.4.0 as affected, and getgrav grav versions 1.4.0 as unaffected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-58655 are linked in the Vendor Advisories panel on this page.

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