CVE-2026-75837

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: Elevated riskExposed: 0

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

Grav before 2.0.14 fails to guard the access field in the core group blueprint with the required security@: admin.super restriction. A delegated admin.users operator can save a group with access[admin][super]=true to escalate to super-admin, gaining scheduler and Twig evaluation capabilities.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
57(Track*)
EG Risk 57/100SSVC: 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
Severity91% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 19, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Grav before 2.0.14 Privilege Escalation via Group Access Field | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-before-privilege-escalation-via-group-access-field
github Patch Available🟡 PoC Available

Missing admin.super guard on core group blueprint access field allows admin.users operator to escalate to super-admin · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-xhfv-7758-r9hx

Vendor Advisories for CVE-2026-75837(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 / 26× 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 07:24 UTCGHSA enrichment
  2. 2026-08-21 03:03 UTCEG score recompute
  3. 2026-08-21 03:03 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 22:42 UTCGHSA enrichment
  6. 2026-08-20 18:22 UTCGHSA enrichment
  7. 2026-08-20 14:01 UTCGHSA enrichment
  8. 2026-08-20 08:52 UTCGHSA enrichment
  9. 2026-08-20 04:32 UTCGHSA enrichment
  10. 2026-08-20 00:10 UTCGHSA enrichment
  11. 2026-08-19 19:47 UTCEG score recompute
  12. 2026-08-19 19:47 UTCGHSA enrichment
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-19 15:25 UTCEG score recompute
  15. 2026-08-19 15:25 UTCGHSA enrichment
  16. 2026-08-19 14:38 UTCEG score recompute
  17. 2026-08-19 14:38 UTCGHSA enrichment
  18. 2026-08-19 10:40 UTCGHSA enrichment
  19. 2026-08-19 06:19 UTCGHSA enrichment
  20. 2026-08-19 01:57 UTCGHSA enrichment
  21. 2026-08-18 21:36 UTCGHSA enrichment
  22. 2026-08-18 16:58 UTCGHSA enrichment
  23. 2026-08-18 12:34 UTCEG score recompute
  24. 2026-08-18 12:34 UTCGHSA enrichment
  25. 2026-08-18 11:29 UTCEG score recompute
Show 1 more
  1. 2026-08-18 11:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-75837?
CVE-2026-75837 is a critical vulnerability published on August 18, 2026. Grav before 2.0.14 fails to guard the access field in the core group blueprint with the required security@: admin.super restriction. A delegated admin.users operator can save a group with access[admin][super]=true to escalate to super-admin, gaining scheduler and Twig evaluation capabilities.
When was CVE-2026-75837 disclosed?
CVE-2026-75837 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75837 actively exploited?
CVE-2026-75837 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 73.0% of all scored CVEs.
What is the CVSS score of CVE-2026-75837?
CVE-2026-75837 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-75837?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75837, 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-2026-75837

Explore →

Is Your Infrastructure Affected by CVE-2026-75837?

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

Start Free Scan →Browse All CVEs