CVE-2026-77791
EUVD-2026-8522923.09.2026, 12:17
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.Enginsight
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| apache | tomcat | 𝑥 ≤ 11.0.25 | CNA |
| apache | tomcat | 10.1.8 ≤ 𝑥 ≤ 10.1.59 | CNA |
| apache | tomcat | 9.0.74 ≤ 𝑥 ≤ 9.0.121 | CNA |
| apache | tomcat | 8.5.88 ≤ 𝑥 ≤ 8.5.100 | CNA |
Debian Releases
Debian Product | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tomcat10 |
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| tomcat11 |
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| tomcat9 |
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Vulnerability Media Exposure