{"api_version":"1","generated_at":"2026-06-19T19:39:35+00:00","cve":"CVE-2026-41838","urls":{"html":"https://cve.report/CVE-2026-41838","api":"https://cve.report/api/cve/CVE-2026-41838.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-41838","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-41838"},"summary":{"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.","state":"PUBLISHED","assigner":"vmware","published_at":"2026-06-09 05:16:35","updated_at":"2026-06-11 16:53:41"},"problem_types":["CWE-330","CWE-330 CWE-330: Use of Insufficiently Random Values"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"security@vmware.com","type":"Secondary","score":"4.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","baseScore":4.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"4.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"url":"https://spring.io/security/cve-2026-41838","name":"https://spring.io/security/cve-2026-41838","refsource":"security@vmware.com","tags":["Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-41838","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41838","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Spring","product":"Spring Framework","version":"affected 7.0.0 7.0.8 custom","platforms":[]},{"source":"CNA","vendor":"Spring","product":"Spring Framework","version":"affected 6.2.0 6.2.19 custom","platforms":[]},{"source":"CNA","vendor":"Spring","product":"Spring Framework","version":"affected 6.1.0 6.1.28 custom","platforms":[]},{"source":"CNA","vendor":"Spring","product":"Spring Framework","version":"affected 5.3.0 5.3.49 custom","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"41838","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"spring_framework","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"41838","cve":"CVE-2026-41838","epss":"0.001710000","percentile":"0.067040000","score_date":"2026-06-16","updated_at":"2026-06-17 00:05:46"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-41838","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-06-09T13:39:36.187494Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-06-09T13:39:43.249Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Spring Framework","vendor":"Spring","versions":[{"lessThan":"7.0.8","status":"affected","version":"7.0.0","versionType":"custom"},{"lessThan":"6.2.19","status":"affected","version":"6.2.0","versionType":"custom"},{"lessThan":"6.1.28","status":"affected","version":"6.1.0","versionType":"custom"},{"lessThan":"5.3.49","status":"affected","version":"5.3.0","versionType":"custom"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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."}],"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."}],"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."}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-330","description":"CWE-330: Use of Insufficiently Random Values","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-09T03:49:15.933Z","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware"},"references":[{"url":"https://spring.io/security/cve-2026-41838"}],"source":{"discovery":"UNKNOWN"},"title":"Spring Framework Predictable Session ID in WebSocket Module","x_generator":{"engine":"Vulnogram 1.0.1"}}},"cveMetadata":{"assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","assignerShortName":"vmware","cveId":"CVE-2026-41838","datePublished":"2026-06-09T03:49:15.933Z","dateReserved":"2026-04-22T06:22:01.122Z","dateUpdated":"2026-06-09T13:39:43.249Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-09 05:16:35","lastModifiedDate":"2026-06-11 16:53:41","problem_types":["CWE-330","CWE-330 CWE-330: Use of Insufficiently Random Values"],"metrics":{"cvssMetricV31":[{"source":"security@vmware.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","baseScore":4.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.2,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3.0","versionEndExcluding":"5.3.49","matchCriteriaId":"9394F974-169E-4FB0-A85B-0114477DE421"},{"vulnerable":true,"criteria":"cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.0","versionEndExcluding":"6.1.28","matchCriteriaId":"CE392CE7-5DA3-4DBE-B22C-27781E204B7E"},{"vulnerable":true,"criteria":"cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2.0","versionEndExcluding":"6.2.19","matchCriteriaId":"4C369542-3C65-45B4-B70A-A406BA063629"},{"vulnerable":true,"criteria":"cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0.0","versionEndExcluding":"7.0.8","matchCriteriaId":"F8552E92-04FB-4262-81B0-ABE727526373"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"41838","Ordinal":"1","Title":"Spring Framework Predictable Session ID in WebSocket Module","CVE":"CVE-2026-41838","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"41838","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Spring Framework Predictable Session ID in WebSocket Module"}]}}}