CVE-2026-86350
Apache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-up
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up. This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from 9.0.118 through 9.0.121. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
| CWE | CWE-444 |
| Vendor | apache software foundation |
| Product | apache tomcat |
| Published | Sep 23, 2026 |
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Affected Versions
Apache Software Foundation / Apache Tomcat
11.0.22 ≤ 11.0.25 10.1.55 ≤ 10.1.59 9.0.118 ≤ 9.0.121
References
Credits
Jeppe Weikop