CVE-2026-59190

Grav Admin Plugin — IDOR Privilege Escalation via saveUser()

HIGH
8.7
CVSS Score
Published: July 10, 2026 at 04:33 PM UTC
Updated: October 25, 2026 at 03:10 PM UTC
1 product affected across 1 vendorGrav

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Severity
HIGH8.7
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

grav-plugin-admin is an HTML user interface that provides a way to configure Grav and create and modify pages. In 1.10.52 and earlier, an authenticated attacker with admin.users permission can change the password of any user account, including the super administrator, by sending a direct POST request to /admin/user/{username}?task=save with data[password] because saveUser authorizes the caller's user-management permission but does not verify whether the caller may edit the target user. This issue is expected to be fixed in version 1.10.53.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639

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