CVE-2026-26717
- Source
- https://cve.org/CVERecord?id=CVE-2026-26717
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26717.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-26717
- Aliases
- Published
- 2026-02-25T00:00:00Z
- Modified
- 2026-08-07T11:31:05.779387566Z
- Severity
-
- 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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 synccourserunfromrequest function. This allows remote attackers to forge valid signatures and bypass authentication by measuring response time discrepancies
- Database specific
{ "cna_assigner": "mitre", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26717.json" }- References
-
- https://medium.com/@ordogh/cve-2026-26717-hmac-timing-attack-in-openfun-richie-lms-f04377efe83d?postPublishedType=repub
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26717.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-26717
- https://github.com/openfun/richie/commit/a1b5bbda3403d7debb466c303a32852925fcba5f
- https://github.com/Rickidevs/CVE-2026-26717
Affected packages
Git / github.com/openfun/richie
Affected versions
v0.*
v0.1.0
v0.1.0-alpha.1
v0.1.0-alpha.3
v0.2.0
v1.*
v1.0.0
v1.0.0-beta.0
v1.0.0-beta.1
v1.0.0-beta.2
v1.0.0-beta.3
v1.0.0-beta.4
v1.0.0-beta.5
v1.0.0-beta.6
v1.0.0-beta.7
v1.0.0-beta.8
v1.0.0-beta.9
v1.0.1
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.12.1
v1.13.0
v1.14.0
v1.14.1
v1.15.0
v1.16.0
v1.16.1
v1.16.2
v1.17.0
v1.2.0
v1.3.0
v1.4.0
v1.4.1
v1.5.0
v1.5.1
v1.5.2
v1.6.0
v1.6.1
v1.7.0
v1.7.1
v1.8.0
v1.8.1
v1.8.2
v1.8.3
v1.9.0
v1.9.1
v1.9.2
v2.*
v2.0.0
v2.0.0-beta.0
v2.0.0-beta.1
v2.0.0-beta.10
v2.0.0-beta.11
v2.0.0-beta.12
v2.0.0-beta.13
v2.0.0-beta.14
v2.0.0-beta.15
v2.0.0-beta.16
v2.0.0-beta.17
v2.0.0-beta.18
v2.0.0-beta.19
v2.0.0-beta.2
v2.0.0-beta.20
v2.0.0-beta.22
v2.0.0-beta.3
v2.0.0-beta.4
v2.0.0-beta.5
v2.0.0-beta.6
v2.0.0-beta.7
v2.0.0-beta.8
v2.0.0-beta.9
v2.0.1
v2.1.0
v2.10.0
v2.11.0
v2.12.0
v2.13.0
v2.14.0
v2.14.1
v2.15.0
v2.15.1
v2.16.0
v2.17.0
v2.18.0
v2.19.0
v2.2.0
v2.20.0
v2.20.1
v2.21.0
v2.21.1
v2.22.0
v2.23.0
v2.25.0
v2.25.0-beta.0
v2.25.0-beta.1
v2.25.1
v2.26.0
v2.27.0
v2.28.0
v2.28.1
v2.29.0
v2.29.1
v2.29.2
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.30.0
v2.31.0
v2.32.0
v2.33.0
v2.34.0
v2.4.0
v2.5.0
v2.6.0
v2.7.0
v2.7.1
v2.8.0
v2.8.1
v2.8.2
v2.9.0
v2.9.1
v3.*
v3.0.0
v3.0.0-beta.0
v3.1.0
v3.1.1
v3.1.2
v3.2.0
v3.2.1