CVE-2026-11430

HIGHPre-NVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory published 2026-08-07. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.3Exploit: None knownExposed: 0

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

Grav CMS's scheduler-webhook plugin contains an authentication bypass in the webhook token check. When the webhook feature is enabled but no webhookToken is configured, a compound conditional short-circuits and skips token validation, so an unauthenticated remote attacker who can reach POST /scheduler/webhook can trigger the operator's already-configured scheduled jobs by sending a single request. The primitive is triggering-existing-jobs, not attacker-chosen command execution: the attacker controls when the jobs run and which one runs (via ?job=), but does not control what the jobs do. Code execution follows only when the operator has configured a job that shells out, and even then the attacker controls timing rather than payload. Not a default-install issue: reaching the endpoint requires the separate scheduler-webhook GPM plugin to be installed, scheduler.modern.webhook.enabled to be true (default false), and no webhookToken to be configured; a stock Grav or Grav-Admin install exposes nothing here.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: Track

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
Severity73% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

August 7, 2026

Last Modified

August 31, 2026

Advisory Details (4)

Auto-updated Aug 7, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
generic

Grav CMS Scheduler Webhook Authentication Bypass via Null Short-Circuit | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-cms-scheduler-webhook-authentication-bypass-via-null-short-circuit
github Patch Available🟡 PoC Available

Coordinated Vulnerability Disclosure - Trilby Media / Grav CMS · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-xwv3-2mv2-w33x
github_commit Patch Available

commit 694f1dae06d9 (getgrav/grav)

Patch available: getgrav/grav 2.0.9 (contains commit 694f1dae06d9)

https://github.com/getgrav/grav/commit/694f1dae06d9061bbf0669c4291e3b206f998d71
generic

GitHub - getgrav/grav: Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS powered by PHP, Markdown, Twig, and Symfony · GitHub

https://github.com/getgrav/grav

Vendor Advisories for CVE-2026-11430(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 23× in last 7d / 100× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 154 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-11430?
CVE-2026-11430 is a high vulnerability published on August 7, 2026. Grav CMS's scheduler-webhook plugin contains an authentication bypass in the webhook token check. When the webhook feature is enabled but no webhookToken is configured, a compound conditional short-circuits and skips token validation, so an unauthenticated remote attacker who can reach POST…
When was CVE-2026-11430 disclosed?
CVE-2026-11430 was first published in the National Vulnerability Database on August 7, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11430 actively exploited?
CVE-2026-11430 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.8% of all scored CVEs.
What is the CVSS score of CVE-2026-11430?
CVE-2026-11430 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-11430?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11430, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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