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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-77791

Apache Tomcat: DoS via busy wait during WebSocket close

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
apache

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache Tomcat

Default version status: unaffected

  • 11.0.0-M5 to ≤ 11.0.25affected
  • 10.1.8 to ≤ 10.1.59affected
  • 9.0.74 to ≤ 9.0.121affected
  • 8.5.88 to ≤ 8.5.100affected
  • 0 to ≤ 7.0.109unaffected

References