Vulnerability Description
Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST authenticated request with a nonceCount on the upper boundary of the replay window then that request is replayable once only while the associated nonceCount remains within the replay window. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.30 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Tomcat | >= 7.0.30, <= 7.0.109 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/9v114xlpgbzrrbzz5vf9f6r2q4wnxwwjVendor AdvisoryMailing List
- http://www.openwall.com/lists/oss-security/2026/08/26/4Third Party AdvisoryMailing List
FAQ
What is CVE-2026-65905?
CVE-2026-65905 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST authenticated request with a nonc...
How severe is CVE-2026-65905?
CVE-2026-65905 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-65905?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat.