CVE-2026-40996

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 material unless operators explicitly reconfigured the flag.

Affected versions: Spring 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.

Affected Software

VendorProductVersion RangeStatus
SpringSpring Web Services5.0.0 < 5.0.1.1affected
SpringSpring Web Services4.1.0 < 4.1.3.1affected
SpringSpring Web Services4.0.0 < 4.0.19affected
SpringSpring Web Services3.1.0 < 3.1.9affected

Weaknesses

  • CWE-327: CWE-327: Use of a Broken or Risky Cryptographic Algorithm

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References