{"id":"CVE-2026-41838","summary":"Spring Framework Predictable Session ID in WebSocket Module","details":"IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules.\n\nAffected versions:\nSpring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.","aliases":["GHSA-q723-847q-5g8g"],"modified":"2026-11-01T10:45:26.024301275Z","published":"2026-06-09T03:49:15.933Z","database_specific":{"cwe_ids":["CWE-330"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41838.json","unresolved_ranges":[{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"7.0.0"},{"fixed":"7.0.7.1"},{"introduced":"6.2.0"},{"fixed":"6.2.18.1"},{"introduced":"6.1.0"},{"fixed":"6.1.28"},{"introduced":"5.3.0"},{"fixed":"5.3.49"}],"source":"AFFECTED_FIELD"}]}],"cna_assigner":"vmware"},"references":[{"type":"WEB","url":"https://spring.io/security/cve-2026-41838"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41838.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41838"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/spring-projects/spring-framework","events":[{"introduced":"fe00848be255db1455f0189d9ff28661f301be36"},{"last_affected":"c997d4018d3dc6a7dde2e20eae3627599a01e169"},{"introduced":"5024bb72279188f1d0dcfe19e8abdd4bdb9887c8"},{"last_affected":"6b117247d383294662e199c6b47d7bf54c49caaa"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"7.0.0"},{"last_affected":"7.0.7"}],"source":"DESCRIPTION"},{"source":"DESCRIPTION","range":[{"introduced":"6.2.0"},{"last_affected":"6.2.18"}]}]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-41838.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N"}]}