Elvin Latifli

2 exploits Active since Feb 2026
CVE-2026-26717 NOMISEC MEDIUM WRITEUP
Richie < 3.3.0 - Observable Timing Discrepancy in HMAC Signature Verification
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
CVSS 4.8
CVE-2026-26717 WRITEUP MEDIUM WRITEUP
Richie < 3.3.0 - Observable Timing Discrepancy in HMAC Signature Verification
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
CVSS 4.8