An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages… (CVE-2026-88920)
An authentication bypass vulnerability exists in the DOM security processor of Apache WSS4J. This flaw allows unauthenticated remote attackers to forge authenticated SOAP messages by using a crafted unsigned SAML sender-vouches assertion with an attacker-controlled key. The issue is fixed in Apache WSS4J versions 4.0.2, 3.0.6, and 2.4.4.
AI Analysis
Technical Summary
The vulnerability in Apache WSS4J's DOM security processor permits unauthenticated remote attackers to bypass authentication controls. Attackers can exploit this by crafting unsigned SAML sender-vouches assertions containing attacker-controlled keys to forge authenticated SOAP messages. This could undermine the integrity and authentication guarantees of SOAP message exchanges. The vendor has addressed this issue in versions 4.0.2, 3.0.6, and 2.4.4.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to forge authenticated SOAP messages, potentially enabling unauthorized actions or access in systems relying on Apache WSS4J for SOAP message security.
Mitigation Recommendations
Users should upgrade to Apache WSS4J versions 4.0.2, 3.0.6, or 2.4.4, which contain fixes for this authentication bypass vulnerability.
An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages… (CVE-2026-88920)
Description
An authentication bypass vulnerability exists in the DOM security processor of Apache WSS4J. This flaw allows unauthenticated remote attackers to forge authenticated SOAP messages by using a crafted unsigned SAML sender-vouches assertion with an attacker-controlled key. The issue is fixed in Apache WSS4J versions 4.0.2, 3.0.6, and 2.4.4.
Affected software
pkg:maven/org.apache.wss4j/wss4jRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Apache WSS4J's DOM security processor permits unauthenticated remote attackers to bypass authentication controls. Attackers can exploit this by crafting unsigned SAML sender-vouches assertions containing attacker-controlled keys to forge authenticated SOAP messages. This could undermine the integrity and authentication guarantees of SOAP message exchanges. The vendor has addressed this issue in versions 4.0.2, 3.0.6, and 2.4.4.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to forge authenticated SOAP messages, potentially enabling unauthorized actions or access in systems relying on Apache WSS4J for SOAP message security.
Mitigation Recommendations
Users should upgrade to Apache WSS4J versions 4.0.2, 3.0.6, or 2.4.4, which contain fixes for this authentication bypass vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4c9g-74h5-78r7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-88920"]
- State
- PUBLISHED
Threat ID: 6abd30722a4e24523d33ff44
Added to database: 09/30/2026, 15:53:22 UTC
Last enriched: 09/30/2026, 15:54:49 UTC
Last updated: 10/01/2026, 05:06:23 UTC
Views: 7
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