CVE-2026-88041CWE-459

CVE-2026-88041

published October 20, 2026

CVSS
—
EPSS
0%
Percentile
16.7
In the wild
Unconfirmed
What it is

Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into a subsequent request.

This issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.26, from 10.1.27 through 10.1.60, from 9.0.92 through 9.0.122.

Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00260 · 16.7th percentile
Weakness
CWE-459 · Incomplete Cleanup
Published
2026-10-20T18:17Z
References (2)
https://lists.apache.org/thread.html/dnmm9l3byytg3l66nk1jrqfrl7jty7n1 · [email protected]http://www.openwall.com/lists/oss-security/2026/10/20/24 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 22 OCT 03:36Z
    EPSS moved — → 0%
    epss
  • 20 OCT 13:43Z
    Apache Tomcat: HTTP/2 trailer header cross-contamination
    cvelistv5
  • 20 OCT 13:43Z
    Apache Tomcat: HTTP/2 trailer header cross-contamination
    cvelistv5