Improperly Implemented Security Check for Standard Affecting org.apache.wss4j:wss4j-ws-security-stax package, versions [,2.4.4)[3.0.0,3.0.6)[4.0.0,4.0.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGAPACHEWSS4J-21716573
- published26 Oct 2026
- disclosed30 Sept 2026
- creditn0mi1k
Introduced: 30 Sep 2026
NewCVE-2026-92121 (opens in a new tab)How to fix?
Upgrade org.apache.wss4j:wss4j-ws-security-stax to version 2.4.4, 3.0.6, 4.0.2 or higher.
Overview
Affected versions of this package are vulnerable to Improperly Implemented Security Check for Standard via the WSSSignatureReferenceVerifyInputProcessor in the StAX signature-reference processing component. An attacker can send a SOAP message containing an STR-Transform signature reference that leaves the internal signed-content flag set, causing WS-SecurityPolicy to stop checking later SignedParts and SignedElements; required unsigned content can then be accepted, enabling XML Signature Wrapping attacks. Signature verification itself and the DOM implementation are unaffected.