{"cve":"CVE-2026-27838","nvd":{"published":"2026-02-26T23:16:34.963","modified":"2026-06-17T10:27:46.250","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","score":3.5},"cwes":["CWE-639"],"references":["https://github.com/wger-project/wger/commit/e964328784e2ee2830a1991d69fadbce86ac9fbf","https://github.com/wger-project/wger/security/advisories/GHSA-42cr-w2gr-m54q"],"products":["wger:wger"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-27838","score":0.00294,"percentile":0.22107,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-42cr-w2gr-m54q","url":"https://osv.dev/vulnerability/GHSA-42cr-w2gr-m54q","summary":"wger: IDOR via user-unscoped cache keys on routine API actions exposes workout data","modified":"2026-07-13T16:43:12.527221480Z","packages":[{"ecosystem":"PyPI","name":"wger","purl":"pkg:pypi/wger","ranges":["<=2.1"],"fixed":[]}]},{"id":"PYSEC-2026-3418","url":"https://osv.dev/vulnerability/PYSEC-2026-3418","summary":"wger: IDOR via user-unscoped cache keys on routine API actions exposes workout data","modified":"2026-07-13T16:33:32.429576776Z","packages":[{"ecosystem":"PyPI","name":"wger","purl":"pkg:pypi/wger","ranges":["<=2.1"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}