CVE-2026-40996
Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
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 | CWE-327 |
| Vendor | spring |
| Product | spring web services |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jun 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Spring / Spring Web Services
5.0.0 < 5.0.2 4.1.0 < 4.1.4 4.0.0 < 4.0.19 3.1.0 < 3.1.9