CVE-2026-92121: In the WSS4J streaming (StAX) code, a signature reference using the WS-Security STR-Transform leaves an internal "inside signed content" flag permanently set…

PriorityP345high7.5CVSS 3.1

AVNACLPRNUINSUCNIHAN

EPSS

0.35%

26.4th percentile

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
apache	wss4j	< 2.4.4	2.4.4
apache	wss4j	>= 3.0.0 < 3.0.6	3.0.6
apache	wss4j	>= 4.0.0 < 4.0.2	4.0.2
apache_software_foundation	apache_wss4j	< 2.4.4	2.4.4
apache_software_foundation	apache_wss4j	>= 3.0.0 < 3.0.6	3.0.6
apache_software_foundation	apache_wss4j	>= 4.0.0 < 4.0.2	4.0.2

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