Replay Attack 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-21716576
- published26 Oct 2026
- disclosed30 Sept 2026
- creditn0mi1k
Introduced: 30 Sep 2026
NewCVE-2026-92899 (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 Replay Attack through the UsernameTokenProcessor and UsernameTokenInputHandler in its DOM and StAX inbound processing. An attacker who captures a valid password-digest UsernameToken can resend it with whitespace added to its Base64 Nonce; the digest still verifies, but the raw-text replay-cache lookup misses the token, allowing the attacker to reuse it on requests of their choosing and perform actions as the authenticated user until the token expires. The attack requires a configured nonce replay cache.