{"id":"CVE-2026-41838","state":"PUBLISHED","title":"Spring Framework Predictable Session ID in WebSocket Module","description":"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.","publishedAt":"2026-06-09T03:49:15.933Z","updatedAt":"2026-06-27T20:57:50.695Z","severity":{"score":4.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","source":"vmware"},"assigner":"vmware","products":["Spring Spring Framework"],"affected":[{"vendor":"Spring","product":"Spring Framework","defaultStatus":"unaffected","versions":[{"version":"7.0.0","status":"affected","lessThan":"7.0.7.1","versionType":"custom"},{"version":"6.2.0","status":"affected","lessThan":"6.2.18.1","versionType":"custom"},{"version":"6.1.0","status":"affected","lessThan":"6.1.28","versionType":"custom"},{"version":"5.3.0","status":"affected","lessThan":"5.3.49","versionType":"custom"}]}],"references":["https://spring.io/security/cve-2026-41838"],"weaknesses":["CWE-330"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41838.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41838","state":"PUBLISHED","datePublished":"2026-06-09T03:49:15.933Z","dateUpdated":"2026-06-27T20:57:50.695Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-04-22T06:22:01.122Z"},"containers":{"cna":{"title":"Spring Framework Predictable Session ID in WebSocket Module","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Spring","product":"Spring Framework","defaultStatus":"unaffected","versions":[{"version":"7.0.0","status":"affected","lessThan":"7.0.7.1","versionType":"custom"},{"version":"6.2.0","status":"affected","lessThan":"6.2.18.1","versionType":"custom"},{"version":"6.1.0","status":"affected","lessThan":"6.1.28","versionType":"custom"},{"version":"5.3.0","status":"affected","lessThan":"5.3.49","versionType":"custom"}]}],"references":[{"url":"https://spring.io/security/cve-2026-41838"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":4.8,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-330","lang":"en","description":"CWE-330: Use of Insufficiently Random Values","type":"CWE"}]}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-06-27T20:57:50.695Z"},"impacts":[{"descriptions":[{"lang":"en","value":"Predictable WebSocket session IDs in the spring-websocket module may allow an attacker to hijack sessions when combined with inadequate authorization rules, leading to unauthorized access."}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-09T13:39:36.187494Z","id":"CVE-2026-41838","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-09T13:39:43.249Z"}}]}}}