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Message-ID: <4804e279-9e3d-ba5d-961a-f6ae455685f5@apache.org>
Date: Wed, 30 Sep 2026 10:31:52 +0000
From: Colm O hEigeartaigh <coheigea@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-88920: Apache WSS4J: SAML Sender-Vouches Authentication
Bypass
Severity: important
Affected versions:
- Apache WSS4J (org.apache.wss4j:wss4j-ws-security-dom) 4.0.0 before 4.0.2
- Apache WSS4J (org.apache.wss4j:wss4j-ws-security-dom) 3.0.0 before 3.0.6
- Apache WSS4J (org.apache.wss4j:wss4j-ws-security-dom) before 2.4.4
Description:
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.
Credit:
Reported by n0mi1k (finder)
References:
https://ws.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-88920
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