Wger
CVE-2026-27839
MEDIUM
GHSA-g8gc-6c4h-jg86
Severity by source
AV:N/AC:L/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. In versions up to and including 2.4, three nutritional_values action endpoints fetch objects via Model.objects.get(pk=pk) - a raw ORM call that bypasses the user-scoped queryset. Any authenticated user can read another user's private nutrition plan data, including caloric intake and full macro breakdown, by supplying an arbitrary PK. Commit 29876a1954fe959e4b58ef070170e81703dab60e contains a fix for the issue.
AnalysisAI
Wger versions up to 2.4 allow authenticated users to access other users' private nutrition plans through insecure direct object references in the nutritional_values endpoints, exposing sensitive dietary data including caloric intake and macronutrient breakdowns. The vulnerability stems from bypassing user-scoped querysets via direct primary key lookups, and public exploit code is available.
Technical ContextAI
Classified as CWE-639 (Authorization Bypass Through User-Controlled Key). Affects Wger. wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, three nutritional_values action endpoints fetch objects via Model.objects.get(pk=pk) — a raw ORM call that bypasses the user-scoped queryset. Any authenticated user can read another user's private nutrition plan data, including caloric intake and full macro breakdown, by supplying an arbitrary PK. Commit 29876a1954fe959e4b58ef070170e81703dab60e contains a fix for the issue.
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
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Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today