{"id":"CVE-2026-40996","title":"Wss4jSecurityInterceptor defaulted allowRSA15KeyTransportAlgorithm to true, overriding Apache WSS4J's safer default for validation RequestData","summary":"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…","severity":"medium","cvss":4.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-327"],"vendor":"broadcom","product":"spring_web_services","affected":["spring_web_services < 3.1.9","spring_web_services >= 4.0.0, < 4.0.19","spring_web_services >= 4.1.0, < 4.1.3.1","spring_web_services >= 5.0.0, < 5.0.1.1"],"patched":["spring_web_services 5.0.1.1"],"published":"2026-06-11","updated":"2026-09-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-40996","references":[{"url":"https://spring.io/security/cve-2026-40996","label":"security@vmware.com"}],"tags":["nvd"],"epss":0.00129,"epssPercentile":0.02895,"ingestedAt":"2026-09-05T13:39:55.384Z","slug":"CVE-2026-40996","body":"## Overview\n\nWss4jSecurityInterceptor 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.\n\n## Affected\n\n- `spring_web_services < 3.1.9`\n- `spring_web_services >= 4.0.0, < 4.0.19`\n- `spring_web_services >= 4.1.0, < 4.1.3.1`\n- `spring_web_services >= 5.0.0, < 5.0.1.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `spring_web_services 5.0.1.1`","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":26.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}