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.
{
"cwe_ids": [
"CWE-327"
],
"github_reviewed": true,
"github_reviewed_at": "2026-08-21T19:12:53Z",
"nvd_published_at": "2026-06-11T07:16:27Z",
"severity": "MODERATE"
}