CVE-2026-65637 Security Details

CVE ID

CVE-2026-65637

CWE

CWE-20

CVE Description

Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

Published

Aug 26, 2026

CVSS Score & Severity

9.3Critical

CVSS Vector

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

EPSS Score

0.751%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/apache/coyote/http2/Stream.receivedEndOfHeaders()Z

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

GitHub · Advisory · GHSA-f525-44xv-f2qjPROJECT

Apache · AnnouncementPROJECT

Apache · Security advisoryPROJECT

Apache · Security advisoryPROJECT