CVE-2026-92899 (GCVE-0-2026-92899)

Vulnerability from cvelistv5 – Published: 2026-09-30 12:02 – Updated: 2026-09-30 12:49
VLAI
Title
Apache WSS4J: UsernameToken replay protection bypassed by re-encoding the Nonce
Summary
Apache WSS4J remembers the Nonce of each UsernameToken it accepts, so a captured token cannot be reused. It stored the Nonce as raw base64 text, but authentication decodes that text and uses the bytes.The same bytes can be written as base64 in several ways. An attacker who captured an authenticated request could re-send it with a space added to the Nonce: the password digest still verified, but the token no longer matched the remembered one, so the replay was accepted. Since a UsernameToken does not cover the message body, the captured token could then be reused on requests of the attacker's choosing until it expired. Affects deployments with a nonce replay cache configured, as Apache CXF has by default, and only tokens using a password digest. The cache is now keyed on the decoded Nonce. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 12:49 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache WSS4J Affected: 4.0.0 , < 4.0.2 (semver)
Affected: 3.0.0 , < 3.0.6 (semver)
Affected: 0 , < 2.4.4 (semver)
guessed Create a notification for this product.
Credits
Reported by n0mi1k
Show details on NVD website
To clipboard 

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