{"id":"CVE-2026-46438","state":"PUBLISHED","title":"wger: Cross-User Data Corruption via Missing Ownership Check on WorkoutLog.slot_entry","description":"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.","publishedAt":"2026-10-07T14:00:10.046Z","updatedAt":"2026-10-07T18:00:21.494Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["wger-project wger"],"affected":[{"vendor":"wger-project","product":"wger","versions":[{"version":"< 2.6","status":"affected"}]}],"references":["https://github.com/wger-project/wger/security/advisories/GHSA-rjpf-7pf5-q54x","https://github.com/wger-project/wger/releases/tag/2.6"],"weaknesses":["CWE-639","CWE-862"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46438.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46438","state":"PUBLISHED","datePublished":"2026-10-07T14:00:10.046Z","dateUpdated":"2026-10-07T18:00:21.494Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-13T22:18:22.830Z"},"containers":{"cna":{"title":"wger: Cross-User Data Corruption via Missing Ownership Check on WorkoutLog.slot_entry","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"wger-project","product":"wger","versions":[{"version":"< 2.6","status":"affected"}]}],"references":[{"url":"https://github.com/wger-project/wger/security/advisories/GHSA-rjpf-7pf5-q54x","name":"https://github.com/wger-project/wger/security/advisories/GHSA-rjpf-7pf5-q54x","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/wger-project/wger/releases/tag/2.6","name":"https://github.com/wger-project/wger/releases/tag/2.6","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-07T14:00:10.046Z"},"source":{"advisory":"GHSA-rjpf-7pf5-q54x","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/wger-project/wger/security/advisories/GHSA-rjpf-7pf5-q54x","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T17:59:46.398717Z","id":"CVE-2026-46438","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-07T18:00:21.494Z"}}]}}}