{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41839", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-04-22T06:22:01.123Z", "datePublished": "2026-06-09T03:49:52.381Z", "dateUpdated": "2026-06-09T03:49:52.381Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-06-09T03:49:52.381Z"}, "title": "Spring Framework Escalation via Session Fixation in WebFlux", "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-384: Session Fixation", "cweId": "CWE-384", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "A WebFlux application with a compromised subdomain is vulnerable to a session fixation escalation attack that allows an attacker to exchange a known session ID for that of an authenticated user."}]}], "affected": [{"vendor": "Spring", "product": "Spring Framework", "defaultStatus": "unaffected", "versions": [{"status": "affected", "version": "7.0.0", "lessThan": "7.0.8", "versionType": "custom"}, {"status": "affected", "version": "6.2.0", "lessThan": "6.2.19", "versionType": "custom"}, {"status": "affected", "version": "6.1.0", "lessThan": "6.1.28", "versionType": "custom"}, {"status": "affected", "version": "5.3.0", "lessThan": "5.3.49", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "A WebFlux application with a compromised subdomain (for example, compromised via cross-site scripting (XSS)) is vulnerable to an escalation attack exchanging a known session ID for that of an authenticated user.\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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A WebFlux application with a compromised subdomain (for example, compromised via cross-site scripting (XSS)) is vulnerable to an escalation attack exchanging a known session ID for that of an authenticated user.\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."}]}], "references": [{"url": "https://spring.io/security/cve-2026-41839"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A WebFlux application with a compromised subdomain (for example, compromised via cross-site scripting (XSS)) is vulnerable to an escalation attack exchanging a known session ID for that of an authenticated user.\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."}], "id": "CVE-2026-41839", "lastModified": "2026-06-09T05:16:35.850", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.5, "source": "security@vmware.com", "type": "Secondary"}]}, "published": "2026-06-09T05:16:35.850", "references": [{"source": "security@vmware.com", "url": "https://spring.io/security/cve-2026-41839"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-384"}], "source": "security@vmware.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.0,7.0.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.2.0,6.2.19)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.0,6.1.28)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.3.0,5.3.49)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Spring Framework", "source": "cna", "vendor": "Spring"}, "product": "spring_framework", "vendor": "spring"}], "created": "2026-06-09T05:30:35.970637+00:00", "updated": "2026-06-09T05:30:35.970678+00:00", "vendors": ["spring", "spring$PRODUCT$spring_framework"]}