CVE-2026-26717
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…
Published: 2026-02-25 · CVSS: 4.8 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7