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Advisory record · GHSA-j5jv-w5cw-j9ff

Moodle authentication bypass vulnerability

CVSS 8.1 HighEPSS 0.0041 · 35th percentile

Published by the GitHub Advisory Database at 3 Feb 2026, 12:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
moodle/moodlePackagist<4.1.22 || >=4.4.0-beta, <4.4.12 || >=4.5.0-beta, <4.5.8 || >=5.0.0-beta, <5.0.4 || >=5.1.0-beta, <5.1.14.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1
Identifiers
GHSA-j5jv-w5cw-j9ff · BIT-moodle-2025-67848 · CVE-2025-67848 · PKSA-d2w7-632f-6wy9
Weakness (CWE)
CWE-280
Tags
Published
3 Feb 2026
Updated
22 Feb 2026

Machine-written summary

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

Moodle versions before 4.1.22, 4.4.0-beta through before 4.4.12, 4.5.0-beta through before 4.5.8, 5.0.0-beta through before 5.0.4, and 5.1.0-beta through before 5.1.1 are affected. A suspended user can authenticate through the LTI Provider because the LTI authentication handlers do not check suspension status, which can allow information disclosure or other unauthorized actions. Upgrade to 4.1.22, 4.4.12, 4.5.8, 5.0.4, or 5.1.1, depending on your branch. The source gives few details about the exact conditions required for exploitation.

Written 3 Nov 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

ScoreRatingCVSSVectorSource
8.1 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CNA (fedora)
  • CISA KEV Not listed.
  • EPSS 0.0041, the 35th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:26 UTC First seen by agentprime
  2. 31 Oct 2026, 14:26 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.