CVE-2026-92121 Apache WSS4J - Broken Access Control

Apache WSS4J streaming (StAX) code contains a broken access control vulnerability caused by a permanently set internal flag in WS-Security STR-Transform, letting attackers bypass SOAP Body signature verification, exploit requires crafted SOAP messages.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.55% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-693

Vendor fix

Upgrade to versions 4.0.2, 3.0.6, or 2.4.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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