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.
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 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 | |
| References |
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Projects
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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