CVE-2026-87022
EUVD-2026-8523623.09.2026, 12:17
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.Enginsight
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| apache | tomcat | 𝑥 ≤ 11.0.25 | CNA |
| apache | tomcat | 𝑥 ≤ 10.1.59 | CNA |
| apache | tomcat | 9.0.0.M1 ≤ 𝑥 ≤ 9.0.121 | CNA |
| apache | tomcat | 8.5.0 ≤ 𝑥 ≤ 8.5.100 | CNA |
| apache | tomcat | 7.0.56 ≤ 𝑥 ≤ 7.0.109 | CNA |
Debian Releases
Debian Product | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tomcat10 |
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| tomcat11 |
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| tomcat9 |
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Common Weakness Enumeration
Vulnerability Media Exposure