CVE-2026-88041 Security Details

CVE ID

CVE-2026-88041

CWE

CWE-459

CVE Description

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.

Published

Oct 21, 2026

CVSS Score & Severity

6.3Medium

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.514%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/apache/coyote/http2/HpackDecoder.emitHeader(Ljava/lang/String;Ljava/lang/String;)V

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

Apache · AnnouncementPROJECT