Description
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.
Published: 2026-09-30
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Wed, 30 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 30 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-680

Wed, 30 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-190
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Wed, 30 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Apache WSS4J: Unauthenticated denial of service via integer overflow in DER parsing of X.509 certificate extensions
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-09-30T13:17:31.672Z

Reserved: 2026-09-22T10:04:52.017Z

Link: CVE-2026-95616

cve-icon Vulnrichment

Updated: 2026-09-30T13:17:31.672Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-30T13:17:28.863

Modified: 2026-09-30T16:14:10.347

Link: CVE-2026-95616

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T13:30:17Z

Weaknesses