{"schemaVersion":3,"id":"CVE-2021-32676","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Nextcloud Talk is a fully on-premises audio/video and chat communication service. Password protected shared chats in Talk before version 9.0.10, 10.0.8 and 11.2.2 did not rotate the session cookie after a successful authentication event. It is recommended that the Nextcloud Talk App is upgraded to 9.0.10, 10.0.8 or 11.2.2. No workarounds for this vulnerability are known to exist.","dates":{"published":"2021-06-16T00:05:10.000Z","modified":"2024-08-03T23:25:31.060Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4,"severity":"medium","vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00953,"percentile":0.60707,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00953},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00953,"percentile":0.60707}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00953,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00953,"percentile":0.60707}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-384","name":"Session Fixation","description":"Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.","type":"weakness","status":"Incomplete","abstraction":"Compound","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/384.html"}],"affected":[{"vendor":"nextcloud","product":"security-advisories","name":"security-advisories","label":"security-advisories","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 9.0.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.0.0, < 10.0.8","noFixRecorded":false,"fixedIn":null},{"text":"≥ 11.0.0, < 11.2.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.0.10 | ≥ 10.0.0, < 10.0.8 | ≥ 11.0.0, < 11.2.2","eol":null,"hubHref":"/vendor/nextcloud/security-advisories"},{"vendor":"nextcloud","product":"talk","name":"talk","label":"talk","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 9.0.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.0.0, < 10.0.8","noFixRecorded":false,"fixedIn":null},{"text":"≥ 11.2.0, < 11.2.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.0.10 | ≥ 10.0.0, < 10.0.8 | ≥ 11.2.0, < 11.2.2","eol":null,"hubHref":"/vendor/nextcloud/talk"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p6h7-84v4-827r","label":"github.com/nextcloud/security-advisories/security/advisories/GHSA-p6h7-84v4-827r","hostname":"github.com","tags":["X Refsource CONFIRM","Third Party Advisory"]},{"url":"https://hackerone.com/reports/1181962","label":"hackerone.com/reports/1181962","hostname":"hackerone.com","tags":["X Refsource MISC","Issue Tracking","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-06-16T00:05:10.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-03T23:25:31.060Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T22:50:45.620Z","stale":false,"partial":false}}