This issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.88 through 8.5.100. 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.
Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 23 Sep 2026 13:30:00 +0000
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cvssV3_1
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Wed, 23 Sep 2026 11:45:00 +0000
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| Description | Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack. This issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.88 through 8.5.100. 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. | |
| Title | Apache Tomcat: DoS via busy wait during WebSocket close | |
| Weaknesses | CWE-400 | |
| References |
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Projects
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-09-23T12:50:22.374Z
Reserved: 2026-08-21T12:38:02.420Z
Link: CVE-2026-77791
Updated: 2026-09-23T12:45:13.588Z
Status : Received
Published: 2026-09-23T12:17:06.927
Modified: 2026-09-23T13:17:29.853
Link: CVE-2026-77791
No data.
OpenCVE Enrichment
No data.