{"id":"CVE-2026-46715","state":"PUBLISHED","title":"Flask-Security-Too OAuth reauthentication freshness bypass via cross- user OAuth identity acceptance","description":"Flask-Security-Too allows users to add security features to their Flask applicationa. Version 5.8.0's OAuth reauthentication flow can mark a session as fresh after verifying an OAuth account that belongs to a different user. If an attacker can operate an already-authenticated but stale victim session, they can complete OAuth verification using their own OAuth identity. The victim session is then treated as recently reauthenticated, allowing freshness-protected account actions to proceed. Version 5.8.1 contains a fix for this issue.","publishedAt":"2026-07-20T17:10:27.014Z","updatedAt":"2026-07-20T18:43:54.970Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["pallets-eco Flask-Security-Too"],"affected":[{"vendor":"pallets-eco","product":"Flask-Security-Too","versions":[{"version":">= 5.8.0, < 5.8.1","status":"affected"}]}],"references":["https://github.com/pallets-eco/flask-security/security/advisories/GHSA-97r5-pg8x-p63p","https://github.com/pallets-eco/flask-security/commit/8e69f3a94a463c0e8ddc46e31743717559fd8d48"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46715.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46715","state":"PUBLISHED","datePublished":"2026-07-20T17:10:27.014Z","dateUpdated":"2026-07-20T18:43:54.970Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-15T23:26:58.309Z"},"containers":{"cna":{"title":"Flask-Security-Too OAuth reauthentication freshness bypass via cross- user OAuth identity acceptance","descriptions":[{"lang":"en","value":"Flask-Security-Too allows users to add security features to their Flask applicationa. Version 5.8.0's OAuth reauthentication flow can mark a session as fresh after verifying an OAuth account that belongs to a different user. If an attacker can operate an already-authenticated but stale victim session, they can complete OAuth verification using their own OAuth identity. The victim session is then treated as recently reauthenticated, allowing freshness-protected account actions to proceed. Version 5.8.1 contains a fix for this issue."}],"affected":[{"vendor":"pallets-eco","product":"Flask-Security-Too","versions":[{"version":">= 5.8.0, < 5.8.1","status":"affected"}]}],"references":[{"url":"https://github.com/pallets-eco/flask-security/security/advisories/GHSA-97r5-pg8x-p63p","name":"https://github.com/pallets-eco/flask-security/security/advisories/GHSA-97r5-pg8x-p63p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pallets-eco/flask-security/commit/8e69f3a94a463c0e8ddc46e31743717559fd8d48","name":"https://github.com/pallets-eco/flask-security/commit/8e69f3a94a463c0e8ddc46e31743717559fd8d48","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-20T17:10:27.014Z"},"source":{"advisory":"GHSA-97r5-pg8x-p63p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/pallets-eco/flask-security/security/advisories/GHSA-97r5-pg8x-p63p","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-20T18:43:51.952833Z","id":"CVE-2026-46715","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":"2026-07-20T18:43:54.970Z"}}]}}}