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CVE-2026-87022

Apache Tomcat: WebSocket message smuggling with per-message-deflate

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-87022

Published

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.

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23 Oct 2026 15:48:27 UTC

Apache Tomcat: WebSocket message smuggling with per-message-deflate

cve-program · CVE-2026-87022 · Published

ChangeIntel

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Sources read 12 Nov 17:32 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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