CVE-2026-92121

Apache WSS4J: WS-SecurityPolicy signature checks skipped in the streaming code after an STR-Transform reference

Published Sep 30, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
In the WSS4J streaming (StAX) code, a signature reference using the WS-Security STR-Transform leaves an internal "inside signed content" flag permanently set. The WS-SecurityPolicy enforcer uses that flag to decide whether an element needs checking, so it stops evaluating SignedParts and SignedElements for the rest of the message. A policy requiring the SOAP Body to be signed is then satisfied even when the Body carries no signature, removing the protection against XML Signature Wrapping. Signature verification itself is unaffected. The DOM code is not affected. 
Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4 which fix this issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:wss4j:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Weaknesses CWE-665
Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache wss4j
Weaknesses CWE-665
Vendors & Products Apache
Apache wss4j
Type Values Removed Values Added
Description In the WSS4J streaming (StAX) code, a signature reference using the WS-Security STR-Transform leaves an internal "inside signed content" flag permanently set. The WS-SecurityPolicy enforcer uses that flag to decide whether an element needs checking, so it stops evaluating SignedParts and SignedElements for the rest of the message. A policy requiring the SOAP Body to be signed is then satisfied even when the Body carries no signature, removing the protection against XML Signature Wrapping. Signature verification itself is unaffected. The DOM code is not affected.  Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4 which fix this issue.
Title Apache WSS4J: WS-SecurityPolicy signature checks skipped in the streaming code after an STR-Transform reference
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Sep 30, 2026, 7:51 PM
Reserved
Sep 15, 2026, 4:17 PM
Status
Analyzed
Published
Sep 30, 2026, 1:17 PM
Modified
Oct 6, 2026, 5:22 PM