CVE-2026-27838
wger: IDOR via user-unscoped cache keys on routine API actions exposes workout data
CVSS Score
3.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | wger-project |
| Product | wger |
| Published | Feb 26, 2026 |
| Last Updated | Mar 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
wger-project / wger
<= 2.4