Apache WSS4J: Unauthenticated denial of service via integer overflow in DER parsing of X.509 certificate extensions
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.
CVE-2026-95616
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-95616
Apache WSS4J
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Apache Software Foundation",
"product": "Apache WSS4J",
"versions": [
{
"status": "affected",
"version": "4.0.0",
"lessThan": "4.0.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.0.0",
"lessThan": "3.0.6",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "2.4.4",
"versionType": "semver"
}
],
"packageURL": "pkg:maven/org.apache.wss4j/wss4j-ws-security-common",
"packageName": "org.apache.wss4j:wss4j-ws-security-common",
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-95616
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #4251 · Revision 1
- Added to Heist Feed
- Publisher date