CVE-2026-109321

CRITICALCVSS 9.1

Description

Grav Login OAuth plugin (grav-plugin-login-oauth) before 1.4.3 provisions OAuth accounts as ordinary Grav users with a deterministic <provider>.<id> username and an unsalted MD5 hash of the provider identifier as the password, without disabling password login. Unauthenticated remote attackers who learn or guess a provider identifier can reproduce these credentials and log in, gaining administrative control of privileged accounts.

Timeline

Published:October 12th, 2026 5:17 PM

Last modified:October 18th, 2026 1:16 PM

CVSS Scoring

CVSS v3: 9.1 (CRITICAL)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses (CWE)

CWE-1391

References & Reports

Advisories, patches, and third-party reports

https://github.com/getgrav/grav/security/advisories/GHSA-mj8v-hvf6-73gm
https://www.vulncheck.com/advisories/grav-login-oauth-plugin-before-1.4.3-predictable-local-credentials-authentication-bypass

Source: NIST NVD · Data may lag official sources by up to one minute