Vulnerability Description
Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. 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
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Tomcat | >= 8.5.59, < 9.0.121 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/tv51ty39ppv41v04hdtkp9dp7tg02nzlVendor AdvisoryMailing List
- http://www.openwall.com/lists/oss-security/2026/08/26/9Third Party AdvisoryMailing List
FAQ
What is CVE-2026-68763?
CVE-2026-68763 is a vulnerability with a CVSS score of 7.5 (HIGH). Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 throug...
How severe is CVE-2026-68763?
CVE-2026-68763 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-68763?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat.