CVSS 9.1 (critical) · published 2026-09-30
In the StAX streaming WS-SecurityPolicy validator, certain relative or unsupported XPath expressions can be converted into paths that never match the actual XML element path. A remote SOAP peer may therefore send a required element without the expected signature or encryption. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.
Affected products (NVD): apache wss4j
Fixed in (NVD): 2.4.4, 3.0.6, 4.0.2
Weakness: CWE-917
Source: NVD CVE-2026-87830
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