CVE-2026-11430

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-08-07. the CNA's CVSS baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
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(high)
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
41%
KEV
Not listed

Published

August 7, 2026

Last Modified

August 13, 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 26× in last 7d / 58× 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.

  1. 2026-08-21 01:07 UTCEG score recompute
  2. 2026-08-21 01:07 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 12:38 UTCGHSA enrichment
  5. 2026-08-20 00:10 UTCEG score recompute
  6. 2026-08-20 00:10 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 11:41 UTCGHSA enrichment
  9. 2026-08-18 23:13 UTCEG score recompute
  10. 2026-08-18 23:13 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 10:45 UTCGHSA enrichment
  13. 2026-08-17 22:17 UTCEG score recompute
  14. 2026-08-17 22:17 UTCGHSA enrichment
  15. 2026-08-17 09:48 UTCGHSA enrichment
  16. 2026-08-16 21:21 UTCEG score recompute
  17. 2026-08-16 21:21 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 08:53 UTCEG score recompute
  20. 2026-08-16 08:53 UTCGHSA enrichment
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-15 20:25 UTCGHSA enrichment
  23. 2026-08-15 07:57 UTCEG score recompute
  24. 2026-08-15 07:57 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 33 more
  1. 2026-08-14 19:28 UTCGHSA enrichment
  2. 2026-08-14 07:00 UTCEG score recompute
  3. 2026-08-14 07:00 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 18:32 UTCEG score recompute
  6. 2026-08-13 18:32 UTCGHSA enrichment
  7. 2026-08-13 15:39 UTCGHSA enrichment
  8. 2026-08-13 03:11 UTCGHSA enrichment
  9. 2026-08-12 14:44 UTCEG score recompute
  10. 2026-08-12 14:44 UTCGHSA enrichment
  11. 2026-08-12 13:50 UTCEPSS rescore
  12. 2026-08-12 02:16 UTCGHSA enrichment
  13. 2026-08-11 13:48 UTCEG score recompute
  14. 2026-08-11 13:48 UTCGHSA enrichment
  15. 2026-08-11 13:42 UTCEPSS rescore
  16. 2026-08-11 01:20 UTCEG score recompute
  17. 2026-08-11 01:20 UTCGHSA enrichment
  18. 2026-08-10 23:59 UTCEPSS rescore
  19. 2026-08-10 12:52 UTCGHSA enrichment
  20. 2026-08-10 00:24 UTCEG score recompute
  21. 2026-08-10 00:24 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 11:57 UTCGHSA enrichment
  24. 2026-08-08 23:29 UTCEG score recompute
  25. 2026-08-08 23:29 UTCGHSA enrichment
  26. 2026-08-08 16:37 UTCEPSS rescore
  27. 2026-08-08 11:01 UTCGHSA enrichment
  28. 2026-08-07 22:33 UTCEG score recompute
  29. 2026-08-07 22:33 UTCGHSA enrichment
  30. 2026-08-07 21:22 UTCEG score recompute
  31. 2026-08-07 19:28 UTCEG score recompute
  32. 2026-08-07 19:12 UTCEG score recompute
  33. 2026-08-07 19:12 UTCMITRE cvelistV5first tracked

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 13, 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 58.8% of all scored CVEs.
What is the CVSS score of CVE-2026-11430?
CVE-2026-11430 has a CVSS v4.0 base score of 7.3 (CNA self-assessment; NVD's own analysis pending).
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.

Dependency Blast Radius

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