Improper Validation of Specified Index, Position, or Offset in Input 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-21716527
- published26 Oct 2026
- disclosed30 Sept 2026
- creditHo1aAs
Introduced: 30 Sep 2026
NewCVE-2026-85532 (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 Improper Validation of Specified Index, Position, or Offset in Input through the DerivedKeyTokenInputHandler and DerivedKeyUtils.deriveKey in its StAX and common derived-key processing. An attacker can send a crafted WS-Security message with extreme derived-key length or offset values, causing excessive CPU and memory use during key derivation and disrupting message processing.
Notes
- At the StAX entry point, the attacker supplies the DerivedKeyToken’s
wsc:Lengthandwsc:Offset; the handler converts both withBigInteger.intValue()before derivation, so oversized XML integers are narrowed to signed 32-bit values and can wrap.