VulnSocial

CVE-2026-26717Disclosure

LOWCVSS 4.8 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-208

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-02-28: 2Technical Details · 2026-02-28: 202-28
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* 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… https://www.cve.org/CVERecord?id=CVE-2026-26717 ----- Traducción: CVE-2026-26717 Un … http://infoflow.cloud`

    Post summary

    A new CVE (CVE-2026-26717) affecting OpenFUN Richie LMS is disclosed, highlighting a timing attack vulnerability in HMAC signature verification.

    0000030
    55 followersView on X
  • CVE@CVEnew
    Disclosure

    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… https://www.cve.org/CVERecord?id=CVE-2026-26717

    Post summary

    The CVE-2026-26717 disclosure highlights a timing‑attack vulnerability in OpenFUN Richie's HMAC verification due to a non‑constant time comparison operator.

    00000238
    56.6K followersView on X

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