Bug 2543897 (CVE-2026-87830) - CVE-2026-87830 wss4j: Apache WSS4J: Security feature bypass via improper XPath handling in streaming policy validation
Summary: CVE-2026-87830 wss4j: Apache WSS4J: Security feature bypass via improper XPat...
Keywords:
Status: NEW
Alias: CVE-2026-87830
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-30 12:03 UTC by OSIDB Bzimport
Modified: 2026-11-06 07:37 UTC (History)
19 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-30 12:03:08 UTC 
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.
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