This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.39 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fix the issue.
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
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Wed, 23 Sep 2026 19:30:00 +0000
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Wed, 23 Sep 2026 16:30:00 +0000
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cvssV3_1
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Wed, 23 Sep 2026 11:45:00 +0000
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| Description | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat allows an attacker to inject trailer fields into another HTTP/2 request. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.39 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fix the issue. | |
| Title | Apache Tomcat: Stale HPACK emitter injects trailers into recycled pooled Request | |
| Weaknesses | CWE-362 | |
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-09-23T18:10:43.790Z
Reserved: 2026-08-21T10:14:30.089Z
Link: CVE-2026-77762
Updated: 2026-09-23T15:39:51.989Z
Status : Awaiting Analysis
Published: 2026-09-23T12:17:06.800
Modified: 2026-09-23T19:19:18.870
Link: CVE-2026-77762
No data.
OpenCVE Enrichment
Updated: 2026-09-23T18:00:07Z
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CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')