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CVE-2026-31946 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: March 30, 2026

OpenOlat - Authentication Bypass

Published: March 30, 2026Updated: March 30, 2026Remote Exploitable

Overview

OpenOlat 10.5.4 to < 20.2.5 contains a broken authentication caused by lack of JWT signature verification in OpenID Connect implicit flow, letting attackers bypass authentication, exploit requires crafted JWT tokens.

Severity & Score

Severity: Critical

CVSS Score: 9.8

Impact

Attackers can bypass authentication by using unsigned or tampered JWT tokens, potentially gaining unauthorized access.

Mitigation

Update to version 20.2.5 or later.

References

https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-v8vp-x4q4-2vch

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-31946
Severity: Critical
CVSS Score: 9.8
Type: broken_authentication
Status: new

CWE

CWE-287

CVSS Metrics

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