CVE-2026-86350

critical · 9.1

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.

9.1

CVSS

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EPSS (exploit prob.)

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EPSS percentile

2026-09-23

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-444

References

https://lists.apache.org/thread/mss45z99lcdd5dtpgcn45dy82f3toswc

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-86350