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 verifica...

Original description

The description as published by the source.

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: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

References

advisory github.com
advisory nvd.nist.gov
package github.com
patch github.com
web medium.com