---
id: CVE-2026-88920
title: >-
  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 ke…
summary: >-
  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 ke…
severity: none
vendor: Apache Software Foundation
product: 'org.apache.wss4j:wss4j-ws-security-dom'
affected:
  - 'org.apache.wss4j:wss4j-ws-security-dom >= 4.0.0 < 4.0.2'
  - 'org.apache.wss4j:wss4j-ws-security-dom >= 3.0.0 < 3.0.6'
  - 'org.apache.wss4j:wss4j-ws-security-dom < 2.4.4'
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T13:17:21.483'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88920'
references:
  - url: 'https://lists.apache.org/thread.html/grt43m3bgbzz0mk0cnho3rcybb1j01z9'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/30/10'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T12:02:58.585Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.