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CVE-2026-54733

Published Jul 16, 2026 CWE-347 EPSS 0.88% (56th pctl)

Overview

CVE-2026-54733 is a known-severity vulnerability. It was published on July 16, 2026.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/microsoft/o365-moodle/commit/01b2d4c2e13b06a66557527084cbf9bace655944 GitHub github.com/microsoft/o365-moodle/commit/258872f6e2011f4efa8ebb77d2898142a9435e89 GitHub github.com/microsoft/o365-moodle/commit/d5596655f0baaee0f11aec2e10d6f36b0bd29220 GitHub github.com/microsoft/o365-moodle/releases/tag/v20260423_m405 GitHub github.com/microsoft/o365-moodle/releases/tag/v20260423_m500 GitHub github.com/microsoft/o365-moodle/releases/tag/v20260423_m501 GitHub github.com/microsoft/o365-moodle/security/advisories/GHSA-hqjh-93qv-47v5

Frequently Asked Questions

What is CVE-2026-54733?

CVE-2026-54733 is a known-severity vulnerability. It was published on July 16, 2026.

How severe is CVE-2026-54733?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-54733?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-54733?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-54733 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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HackBrowser

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