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.
Cite this page
CVE-2026-27838. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-27838
Use CWE-639, Wger vendor hub and Wger product page to widen CVE-2026-27838 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2022-2650, CVE-2026-40474 and CVE-2026-40353 for nearby disclosures in the same product family.