CVE-2026-78437

HIGHCVSS 7.3

Description

Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially (depends on timing) cause one request from another user to fail. This issue affects Apache Tomcat: from 11.0.19 through 11.0.25, from 10.1.53 through 10.1.59, from 9.0.116 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.

Timeline

Published:September 23rd, 2026 12:17 PM

Last modified:September 23rd, 2026 7:19 PM

CVSS Scoring

CVSS v3: 7.3 (HIGH)

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

Weaknesses (CWE)

CWE-459

References & Reports

Advisories, patches, and third-party reports

https://lists.apache.org/thread/qkmsos3s8chn5053qr466rzwv6sk5gjg
http://www.openwall.com/lists/oss-security/2026/09/23/26

Source: NIST NVD · Data may lag official sources by up to one minute