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.
Metrics
Affected Vendors & Products
References
History
Tue, 06 Oct 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Apache
Apache wss4j |
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| CPEs | cpe:2.3:a:apache:wss4j:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Apache
Apache wss4j |
Wed, 30 Sep 2026 21:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-680 |
Wed, 30 Sep 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Metrics |
ssvc
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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
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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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Status: PUBLISHED
Assigner: apache
Published: 2026-09-30T12:25:28.399Z
Updated: 2026-09-30T13:17:31.672Z
Reserved: 2026-09-22T10:04:52.017Z
Link: CVE-2026-95616
Updated: 2026-09-30T13:17:31.672Z
Status : Analyzed
Published: 2026-09-30T13:17:28.863
Modified: 2026-10-06T17:21:33.233
Link: CVE-2026-95616
No data.