{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40996","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","state":"PUBLISHED","assignerShortName":"vmware","dateReserved":"2026-04-16T02:19:12.969Z","datePublished":"2026-06-11T05:04:05.227Z","dateUpdated":"2026-06-23T19:48:50.570Z"},"containers":{"cna":{"providerMetadata":{"orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware","dateUpdated":"2026-06-23T19:48:50.570Z"},"title":"Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-327","description":"CWE-327: Use of a Broken or Risky Cryptographic Algorithm","type":"CWE"}]}],"impacts":[{"descriptions":[{"lang":"en","value":"An attacker in a man-in-the-middle or oracle-capable position can exploit the weak RSA PKCS#1 v1.5 key transport algorithm accepted by default for inbound WS-Security decryption."}]}],"affected":[{"vendor":"Spring","product":"Spring Web Services","versions":[{"status":"affected","version":"5.0.0","lessThan":"5.0.1.1","versionType":"custom"},{"status":"affected","version":"4.1.0","lessThan":"4.1.3.1","versionType":"custom"},{"status":"affected","version":"4.0.0","lessThan":"4.0.19","versionType":"custom"},{"status":"affected","version":"3.1.0","lessThan":"3.1.9","versionType":"custom"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"Wss4jSecurityInterceptor defaulted allowRSA15KeyTransportAlgorithm to true, overriding Apache WSS4J's safer default for validation RequestData. Inbound WS-Security decryption could therefore accept RSA PKCS#1 v1.5 (rsa-1_5) encrypted key material unless operators explicitly reconfigured the flag.\n\nAffected versions:\nSpring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.","supportingMedia":[{"type":"text/html","base64":false,"value":"Wss4jSecurityInterceptor defaulted allowRSA15KeyTransportAlgorithm to true, overriding Apache WSS4J's safer default for validation RequestData. Inbound WS-Security decryption could therefore accept RSA PKCS#1 v1.5 (rsa-1_5) encrypted key material unless operators explicitly reconfigured the flag.\n\nAffected versions:\nSpring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8."}]}],"references":[{"url":"https://spring.io/security/cve-2026-40996"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":4.8,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-11T12:44:42.180161Z","id":"CVE-2026-40996","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-11T12:44:51.674Z"}}]}}