Wger
CVE-2026-27838
LOW
GHSA-42cr-w2gr-m54q
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
4DescriptionGitHub Advisory
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.
AnalysisAI
wger is a free, open-source workout and fitness manager. Five routine detail action endpoints check a cache before calling self.get_object(). [CVSS 3.1 LOW]
Technical ContextAI
Classified as CWE-639 (Authorization Bypass Through User-Controlled Key). Affects Wger. 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.
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
Improper Restriction of Excessive Authentication Attempts in GitHub repository wger-project/wger prior to 2.2. Rated cri
Cross Site Scripting vulnerability in wger Project wger Workout Manager v.2.2.0a3 allows a remote attacker to gain privi
Cross Site Request Forgery (CSRF) vulnerability in wger Project wger Workout Manager 2.2.0a3 allows a remote attacker to
Wger versions up to 2.4 allow authenticated users to access other users' private nutrition plans through insecure direct
Wger versions up to 2.4 expose all users' repetition configuration data to any authenticated attacker due to missing aut
Uncontrolled resource consumption in wger before 2.5 allows any authenticated user to exhaust server worker threads and
Incomplete authorization fix in wger through master exposes three user-management views in wger/core/views/user.py to th
Cross-site request forgery in wger's gym password-reset endpoint allows a remote attacker to force an arbitrary member's
Open redirect in wger's trainer_login view allows an attacker to redirect an authenticated trainer's browser to an arbit
CSV/TSV formula injection in wger's gym member export endpoint allows any authenticated gym member to pre-load spreadshe
Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today