CVE-2026-40996

Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default

Published Jun 11, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-p7qj-2q5w-f9r7 Spring Web Services: Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default
References
History
Type Values Removed Values Added
First Time appeared Broadcom
Broadcom spring Web Services
CPEs cpe:2.3:a:broadcom:spring_web_services:*:*:*:*:*:*:*:*
Vendors & Products Broadcom
Broadcom spring Web Services
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Spring
Spring spring Web Services
Vendors & Products Spring
Spring spring Web Services
Type Values Removed Values Added
Description 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.
Title Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default
Weaknesses CWE-327
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Jun 23, 2026, 7:48 PM
Reserved
Apr 16, 2026, 2:19 AM
Status
Analyzed
Published
Jun 11, 2026, 7:16 AM
Modified
Sep 4, 2026, 5:08 PM