Apache Tomcat: DoS via busy wait during WebSocket close
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | unaffected |
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No data.
| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Hardened Images | |||
| tomcat10-main-10.1.60-0.1.hum1 | cpe:/a:redhat:hummingbird:1 | RHSA-2026:68257 | 2026-09-16T00:00:00Z |
| tomcat11-main-11.0.26-0.1.hum1 | cpe:/a:redhat:hummingbird:1 | RHSA-2026:68258 | 2026-09-16T00:00:00Z |
| Vendor | Product | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache | Apache Tomcat |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.679% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat hummingbird |
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| Weaknesses | CWE-1050 | |
| CPEs | cpe:/a:redhat:hummingbird:1 | |
| Vendors & Products |
Redhat
Redhat hummingbird |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| References |
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| Type | Values Removed | Values Added |
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| First Time appeared |
Apache
Apache apache Tomcat |
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| Vendors & Products |
Apache
Apache apache Tomcat |
| Type | Values Removed | Values Added |
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| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
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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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