{"id":"CVE-2026-46438","summary":"wger: Cross-User Data Corruption via Missing Ownership Check on WorkoutLog.slot_entry","details":"wger is a free, open-source workout and fitness manager. Prior to version 2.6, an authenticated attacker can inject arbitrary workout log entries into any other user's `SlotEntry` by supplying the victim's `slot_entry` ID in a `POST /api/v2/workoutlog/` request. The `slot_entry` foreign key is not included in the ownership verification performed by `WorkoutLogViewSet.get_owner_objects()`, so the server accepts and persists the cross-user reference without error. Because `SlotEntry.get_config_data()` retrieves associated logs via `self.workoutlog_set.all()` with no user filter, the attacker's injected data is silently folded into the victim's progressive-overload calculations, corrupting their auto-generated weight and repetition targets. Version 2.6 contains a patch.","aliases":["GHSA-rjpf-7pf5-q54x"],"modified":"2026-10-08T02:50:57.817744151Z","published":"2026-10-07T14:00:10.046Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-639","CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46438.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46438.json"},{"type":"WEB","url":"https://github.com/wger-project/wger/releases/tag/2.6"},{"type":"ADVISORY","url":"https://github.com/wger-project/wger/security/advisories/GHSA-rjpf-7pf5-q54x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46438"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wger-project/wger","events":[{"introduced":"0"},{"fixed":"e1d70bcc38cd56ae4a254dca1713c404d069f319"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.6"}],"source":"AFFECTED_FIELD"}}],"versions":["2.5","2.4","2.3","2.0","1.9","1.8","1.7","1.5","1.4","1.3","1.2","1.1","1.0.3","1.0.2","1.0.1","1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46438.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}]}