{"id":"CVE-2026-86254","state":"PUBLISHED","title":"wger Incomplete Authorization Fix Cross-Tenant Account Deletion","description":"wger versions through master contain an incomplete authorization bypass in wger/core/views/user.py where three views retain the original gym-scope check using raw integer comparison instead of the is_same_gym() helper, allowing gym staff with gym=None to delete, deactivate, or activate any other user with gym=None. Attackers with gym.manage_gym permission and gym=None affiliation can permanently delete user accounts, lock users out via deactivation, or undo defensive deactivations by exploiting the None != None comparison edge case.","publishedAt":"2026-09-06T12:00:28.899Z","updatedAt":"2026-09-08T13:33:31.957Z","severity":{"score":6.1,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["wger-project wger"],"affected":[{"vendor":"wger-project","product":"wger","packageURL":"pkg:pypi/wger","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"master","versionType":"custom"}]}],"references":["https://github.com/wger-project/wger/security/advisories/GHSA-mw8f-w6p8-xrf4","https://www.vulncheck.com/advisories/wger-incomplete-authorization-fix-cross-tenant-account-deletion"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/86xxx/CVE-2026-86254.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86254","state":"PUBLISHED","datePublished":"2026-09-06T12:00:28.899Z","dateUpdated":"2026-09-08T13:33:31.957Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-06T11:35:19.316Z"},"containers":{"cna":{"title":"wger Incomplete Authorization Fix Cross-Tenant Account Deletion","descriptions":[{"lang":"en","value":"wger versions through master contain an incomplete authorization bypass in wger/core/views/user.py where three views retain the original gym-scope check using raw integer comparison instead of the is_same_gym() helper, allowing gym staff with gym=None to delete, deactivate, or activate any other user with gym=None. Attackers with gym.manage_gym permission and gym=None affiliation can permanently delete user accounts, lock users out via deactivation, or undo defensive deactivations by exploiting the None != None comparison edge case."}],"affected":[{"vendor":"wger-project","product":"wger","packageURL":"pkg:pypi/wger","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"master","versionType":"custom"}]}],"references":[{"url":"https://github.com/wger-project/wger/security/advisories/GHSA-mw8f-w6p8-xrf4","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-mw8f-w6p8-xrf4)"},{"url":"https://www.vulncheck.com/advisories/wger-incomplete-authorization-fix-cross-tenant-account-deletion","name":"VulnCheck Advisory: wger Incomplete Authorization Fix Cross-Tenant Account Deletion","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":6.8,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-06T12:00:28.899Z"},"datePublic":"2026-05-14T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*","versionEndIncluding":"master"}]}]}],"credits":[{"lang":"en","value":"HiyokoSauna37","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/wger-project/wger/security/advisories/GHSA-mw8f-w6p8-xrf4","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-08T13:32:54.776180Z","id":"CVE-2026-86254","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":"2026-09-08T13:33:31.957Z"}}]}}}