๐Ÿ›ก๏ธ CVE-2026-26717
๐ŸŸก CVSS 4.8 โ€” Medium โœ… No Known Exploit CWE-208 NVD
4.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An issue in OpenFUN Richie (LMS) in src/richie/apps/courses/api.py. The application used the non-constant time == operator for HMAC signature verification in the sync_course_run_from_request function. This allows remote attackers to forge valid signatures and bypass authentication by measuring response time discrepancies

Details

Severity Medium
CVSS Score 4.8
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE CWE-208
Public Exploit โœ… No
Source NVD
Published 2026-02-25
Updated 2026-06-02
Modified 2026-02-26
Fix URL N/A

Affected Packages

Software From version Fixed in
richie โ€” 3.3.0
unknown โ€” โ€”

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