CVE-2026-27838

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.

CVSS v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/wger-project/wger/commit/e964328784e2ee2830a1991d69fadbce86ac9fbf	Patch
https://github.com/wger-project/wger/security/advisories/GHSA-42cr-w2gr-m54q	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-26 23:16

Updated : 2026-03-03 00:50

NVD link : CVE-2026-27838

Mitre link : CVE-2026-27838

CVE.ORG link : CVE-2026-27838

JSON object : View

Products Affected

wger

wger

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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