CVE-2026-75836

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-18. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

The Grav API plugin (getgrav/grav-plugin-api, bundled with Grav's admin-next/API stack) before 1.0.14 fails to enforce the authorize requirement in MenubarController::executeAction(). While the GET /menubar/items listing endpoint correctly filters menubar items via userPassesAuthorize(), the POST /api/v1/menubar/actions/{plugin}/{action} endpoint only checks the baseline api.access permission and never evaluates the authorize field a plugin registered for that action. Any authenticated caller with api.access can therefore invoke a privileged menubar action directly, bypassing the intended authorization. No plugin bundled with core Grav currently registers a privileged authorize handler, so on a stock install the impact is latent; the flaw affects any first- or third-party plugin relying on the documented authorize semantics.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 18, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
Patch available. Sources: github.
generic

Grav API Plugin before 1.0.14 Missing Authorization | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-api-plugin-before-missing-authorization-2
github Patch Available

MenubarController::executeAction() never enforces the authorize requirement it advertises · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-8mjx-xjfv-9c88

Vendor Advisories for CVE-2026-75836(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 18× in last 7d / 18× 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 00:06 UTCEG score recompute
  2. 2026-08-21 00:06 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:46 UTCGHSA enrichment
  5. 2026-08-20 01:25 UTCEG score recompute
  6. 2026-08-20 01:25 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 14:05 UTCGHSA enrichment
  9. 2026-08-19 02:45 UTCEG score recompute
  10. 2026-08-19 02:45 UTCGHSA enrichment
  11. 2026-08-18 15:22 UTCEG score recompute
  12. 2026-08-18 15:22 UTCGHSA enrichment
  13. 2026-08-18 14:46 UTCEG score recompute
  14. 2026-08-18 14:46 UTCGHSA enrichment
  15. 2026-08-18 12:34 UTCEG score recompute
  16. 2026-08-18 12:34 UTCGHSA enrichment
  17. 2026-08-18 11:29 UTCEG score recompute
  18. 2026-08-18 11:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-75836?
CVE-2026-75836 is a high vulnerability published on August 18, 2026. The Grav API plugin (getgrav/grav-plugin-api, bundled with Grav's admin-next/API stack) before 1.0.14 fails to enforce the authorize requirement in MenubarController::executeAction(). While the GET /menubar/items listing endpoint correctly filters menubar items via userPassesAuthorize(), the POST…
When was CVE-2026-75836 disclosed?
CVE-2026-75836 was first published in the National Vulnerability Database on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75836 actively exploited?
CVE-2026-75836 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.9% of all scored CVEs.
What is the CVSS score of CVE-2026-75836?
CVE-2026-75836 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-75836?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75836, 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

Explore the affected products and dependency analysis for CVE-2026-75836

Explore →

Is Your Infrastructure Affected by CVE-2026-75836?

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

Start Free Scan →Browse All CVEs