Riskcovery

CVE-2026-95616

Apache WSS4J: Unauthenticated denial of service via integer overflow in DER parsing of X.509 certificate extensions

State
Published
Severity
7.5 High
Published
Sep 30, 2026
Updated
Sep 30, 2026
Reserved
Sep 22, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

  • CWE-190 Integer Overflow or Wraparound

Affected Products

ProductVersions
Apache WSS4JApache Software Foundation
  • 4.0.0 to before 4.0.2Affected
  • 3.0.0 to before 3.0.6Affected
  • before 2.4.4Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.