CVE-2026-95616

An integer overflow in WSS4J's DER bounds check lets an oversized allocation pass validation. An unauthenticated attacker can send a SOAP message carrying an X.509 certificate whose SubjectKeyIdentifier extension declares a length of 0x7FFFFFFF; WSS4J decodes this while resolving the signature's key reference, before the message is authenticated, so an eleven-byte extension triggers a 2 GB allocation. Repeated requests exhaust server memory. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread.html/sdf0fsphkg4qbj7nh2brjgwvcmd67hct	Vendor Advisory Mailing List
http://www.openwall.com/lists/oss-security/2026/09/30/14	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:wss4j::::::::
	cpe:2.3:a:apache:wss4j::::::::
	cpe:2.3:a:apache:wss4j::::::::

History

06 Oct 2026, 17:21

Type	Values Removed	Values Added
CPE		cpe:2.3:a:apache:wss4j::::::::
First Time		Apache Apache wss4j
References	~~() https://lists.apache.org/thread.html/sdf0fsphkg4qbj7nh2brjgwvcmd67hct -~~	() https://lists.apache.org/thread.html/sdf0fsphkg4qbj7nh2brjgwvcmd67hct - Vendor Advisory, Mailing List
References	~~() http://www.openwall.com/lists/oss-security/2026/09/30/14 -~~	() http://www.openwall.com/lists/oss-security/2026/09/30/14 - Mailing List, Third Party Advisory

30 Sep 2026, 14:18

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/09/30/14 -

30 Sep 2026, 13:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-30 13:17

Updated : 2026-10-06 17:21

NVD link : CVE-2026-95616

Mitre link : CVE-2026-95616

CVE.ORG link : CVE-2026-95616

JSON object : View

Products Affected

apache

wss4j

CWE

CWE-190

Integer Overflow or Wraparound

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