CVE-2026-27838
wger: IDOR via user-unscoped cache keys on routine API actions exposes workout data
LOW 3.5EPSS 0.3%
wger is a free, open-source workout and fitness manager. Five routine detail action endpoints check a cache before calling `self.get_object()`. In versions up to and including 2.4, ache keys are scoped only by `pk` — no user ID is included. When a victim has previously accessed their routine via the API, an attacker can retrieve the cached response for the same PK without any ownership check. Commit e964328784e2ee2830a1991d69fadbce86ac9fbf contains a patch for the issue.
- Affected
- wger-project · wger
- CVSS v3.1 NVD
- 3.5 LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N - CVSS v3.1 GITHUB
- 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N - EPSS
- 0.26% chance of exploitation in the next 30 days, 16th percentile
- Published
- 2026-02-26
- Updated
- 2026-03-03
Proof-of-concept exploits (1)
Security advisories
- wger-project/wger/security/advisories/GHSA-42cr-w2gr-m54q
- wger-project/wger/commit/e964328784e2ee2830a1991d69fadbce86ac9fbf