This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, 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 15:30:00 +0000
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Wed, 23 Sep 2026 14:15:00 +0000
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Apache
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Wed, 23 Sep 2026 11:45:00 +0000
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| Description | Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121. The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue. | |
| Title | Apache Tomcat: WebSocket message smuggling with per-message-deflate | |
| Weaknesses | CWE-130 | |
| References |
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Projects
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-09-23T18:10:52.633Z
Reserved: 2026-09-08T17:16:33.368Z
Link: CVE-2026-87022
Updated: 2026-09-23T14:27:08.349Z
Status : Awaiting Analysis
Published: 2026-09-23T12:17:08.640
Modified: 2026-09-23T17:58:26.570
Link: CVE-2026-87022
No data.
OpenCVE Enrichment
Updated: 2026-09-23T16:45:03Z