CVE-2026-87830
Apache WSS4J: Streaming WS-SecurityPolicy validation may skip element-protection checks.
- Published
- Last modified
- Status
- published
- Known exploitation
- Not listed in CISA KEV
- Fix
- Fixed in 4.0.2, 3.0.6, 2.4.4
- Public exploit
- None on Exploit-DB
CISA SSVC
- Exploitation: none
- Automatable: yes
- Technical impact: total
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Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).
SSVC documentationSummary
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 versions
- org.apache.wss4j:wss4j-ws-security-policy-stax
From 4.0.0 · fixed in 4.0.2; From 3.0.0 · fixed in 3.0.6; fixed in 2.4.4