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CVE-2026-78383 Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP…

Description

Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP request to pin an AJP processing thread leading to denial of service. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121. 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 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

Affected products and versions

Product Affected versions Fixed in
Apache Tomcat 11.0 11.0.0-M1 → 11.0.25 No fix stated
Apache Tomcat 10.1 10.1.0-M1 → 10.1.59 No fix stated
Apache Tomcat 9.0 9.0.0.M1 → 9.0.121 No fix stated
Apache Tomcat 8.5 8.5.0 → 8.5.100 No fix stated
Apache Tomcat 7.0 7.0.0 → 7.0.109 No fix stated

References

Timeline

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