CVE-2026-88920

Published: Sep 30, 2026Modified: Oct 2, 2026

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (3)

Products: Apache: Wss4j

1 product

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Apache Wss4j	version < 2.4.4
Apache Wss4j	3.0.0 ≤ version < 3.0.6
Apache Wss4j	4.0.0 ≤ version < 4.0.2

Related CWEs

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (2)

https://lists.apache.org/thread.html/grt43m3bgbzz0mk0cnho3rcybb1j01z9

Source: security@apache.org

Mailing ListVendor Advisory

http://www.openwall.com/lists/oss-security/2026/09/30/10

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

Timeline

No history available yet.