CVE-2026-24880CWE-444

Apache Tomcat: Request smuggling via invalid chunk extension

High · published April 9, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
51.9
In the wild
Unconfirmed
What it is

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.

Other, unsupported versions may also be affected.

Users are recommended to upgrade to version 11.0.20, 10.1.52 or 9.0.116, which fix the issue.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00683 · 51.9th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2026-04-09T19:12Z
EPSS history
Timeline
  • 09 APR 19:12Z
    Apache Tomcat: Request smuggling via invalid chunk extension
    cvelistv5