Bug 2543896 (CVE-2026-88920) - CVE-2026-88920 org.apache.wss4j/wss4j-ws-security-dom: Apache WSS4J: Authentication bypass via unsigned SAML sender-vouches assertion
Summary: CVE-2026-88920 org.apache.wss4j/wss4j-ws-security-dom: Apache WSS4J: Authenti...
Keywords:
Status: NEW
Alias: CVE-2026-88920
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-30 12:02 UTC by OSIDB Bzimport
Modified: 2026-10-15 23:26 UTC (History)
39 users (show)

Fixed In Version:
Clone Of:
Environment:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:83670 0 None None None 2026-10-15 23:26:11 UTC

Description OSIDB Bzimport 2026-09-30 12:02:24 UTC 
An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages via a crafted unsigned SAML sender-vouches assertion containing an attacker-controlled key.

Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.
Comment 1 Jon Orris 2026-10-15 23:26:09 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 4.18 for Quarkus 3.33

Via RHSA-2026:83670 https://access.redhat.com/errata/RHSA-2026:83670
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