CVE-2026-88920 — Apache WSS4J: SAML Sender-Vouches Authentication Bypass

Description (CNA)

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 (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache WSS4J	affected 4.0.0 before 4.0.2; affected 3.0.0 before 3.0.6; affected 0 before 2.4.4

CWE

No CWE identifiers supplied.

References

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

ADP enrichment

CVE

No English description supplied.

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

CISA-ADP

No English description supplied.

No references supplied.