🛡️ CVE-2026-54733

⚪ Unknown ✅ No Known Exploit CWE-347 NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The Microsoft 365 and Microsoft Entra ID Plugins for Moodle provide Office 365 and Azure Active Directory integration for Moodle. Prior to 4.5.6, 5.0.5, and 5.1.1, the Microsoft Office 365 Integration plugin local_o365 Teams SSO endpoint sso_login.php base64-decodes a JWT payload and authenticates users from the upn claim without verifying the JWT signature, allowing an unauthenticated attacker to forge a token and obtain a Moodle session as an O365-authenticated user. This issue is fixed in versions 4.5.6, 5.0.5, and 5.1.1.

Weakness class

CVE-2026-54733 is classified as CWE-347: Improper Verification of Cryptographic Signature. A signature is not checked correctly, so forged or modified content is accepted as genuine.

Affected software

CVE-2026-54733 is recorded against 1 package.

  • unknown

Timeline and source

Published on 16 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
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Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE CWE-347
Public Exploit ✅ No
Source NVD
Published 2026-07-16
Updated 2026-08-11
Modified 2026-07-16
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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