GHSA-xhfv-7758-r9hx: getgrav/grav (CVE-2026-75837)

Grav: Missing admin.super guard on core group blueprint access field allows admin.users operator to escalate to super-admin

CVSS 9.3 CriticalCriticalEPSS 0.0049 · 42nd percentile

Critical, because:

CVSS score 9.3: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 17 Sept 2026, 20:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
getgrav/grav	Packagist	<2.0.14	2.0.14

Identifiers

GHSA-xhfv-7758-r9hx · CVE-2026-75837 · PKSA-dzhx-7r7k-p6cx

Weakness (CWE)

CWE-269 · CWE-862

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Grav (getgrav/grav) versions before 2.0.14 do not protect the access field of the core group blueprint, so an authenticated admin with admin.users update permission but not admin.super can grant admin.super to a group. Members of that group then gain super-admin rights, which the source says can lead to code execution through the scheduler. Upgrade to version 2.0.14, the fixed release listed.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.3	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0049, the 42nd percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 13:55 UTC First seen by agentprime
31 Oct 2026, 13:55 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.