CVE-2026-92899: Apache WSS4J · Incorrect Behavior Order: Validate Before Canonicalize
Affects Apache WSS4JSource CVE Database V5
Not known to be exploited · CVSS 4.8 Medium · fixed in 4.0.2 : update Apache WSS4J when convenient.
Data as of 14 Nov 2026, 20:44 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 4.8 |
|---|
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.0.2, 3.0.6, 2.4.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.
What to do
Upgrade Apache WSS4J and org.apache.wss4j/wss4j-ws-security-dom to 4.0.2, 3.0.6 or 2.4.4.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apache WSS4Jorg.apache.wss4j:wss4j-ws-security-dom | Affected
| Fixed in
|
| Apache WSS4Jorg.apache.wss4j:wss4j-ws-security-dom | Affected
| Fixed in
|
| Apache WSS4Jorg.apache.wss4j:wss4j-ws-security-dom | Affected
| Fixed in
|
Mavenorg.apache.wss4j/wss4j-ws-security-dompkg:maven/org.apache.wss4j/wss4j-ws-security-domOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should upgrade Apache WSS4J to versions 4.0.2, 3.0.6, or 2.4.4 or later, where the nonce replay cache keys Nonce values on decoded bytes rather than raw base64 text, preventing this replay attack. No other mitigation is required once upgraded.
Description
Apache WSS4J versions prior to 4.0.2, 3.0.6, and 2.4.4 have a vulnerability in the handling of UsernameToken Nonce values. The system stored Nonce values as raw base64 text, but authentication uses decoded bytes, allowing an attacker to replay captured tokens by modifying the base64 encoding without changing the decoded value. This bypasses the nonce replay cache, enabling reuse of tokens until expiration. The issue affects deployments with nonce replay cache enabled and tokens using password digest authentication.