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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-42cr-w2gr-m54q wger: IDOR via user-unscoped cache keys on routine API actions exposes workout data
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 03 Mar 2026 06:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Mar 2026 01:00:00 +0000

Type Values Removed Values Added
First Time appeared Wger
Wger wger
CPEs cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*
Vendors & Products Wger
Wger wger

Fri, 27 Feb 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Wger-project
Wger-project wger
Vendors & Products Wger-project
Wger-project wger

Thu, 26 Feb 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title wger: IDOR via user-unscoped cache keys on routine API actions exposes workout data
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-03T01:37:38.975Z

Reserved: 2026-02-24T02:32:39.801Z

Link: CVE-2026-27838

cve-icon Vulnrichment

Updated: 2026-03-03T01:37:34.898Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-26T23:16:34.963

Modified: 2026-03-03T00:50:54.890

Link: CVE-2026-27838

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-27T09:03:59Z

Weaknesses