CVE-2026-95616

Severity CVSS v4.0:

Pending analysis

Type:

CWE-190 Integer Overflow or Wraparound

Publication date:

30/09/2026

Last modified:

06/10/2026

Description

An integer overflow in WSS4J&#39;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&#39;s key reference, before the message is authenticated, so an eleven-byte extension triggers a 2 GB allocation. Repeated requests exhaust server memory.<br /> Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:apache:wss4j::::::::		2.4.4 (excluding)
cpe:2.3:a:apache:wss4j::::::::	3.0.0 (including)	3.0.6 (excluding)
cpe:2.3:a:apache:wss4j::::::::	4.0.0 (including)	4.0.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-95616

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools