DEBIAN-CVE-2026-78437: Security update for 2 packages

DEBIAN-CVE-2026-78437, released September 24, 2026, fixes 1 CVE across 2 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.3

Base score, 0 to 10

Highest EPSS

0.0051

43rd percentile

Fixed package versions

Product	Release	Fixed in
tomcat10	Debian 14	10.1.60-1
tomcat9	Debian 12.15 (bookworm)	9.0.70-2
tomcat9	Debian 13.5 (trixie)	9.0.70-2
tomcat9	Debian 14	9.0.70-2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-78437	tomcat9: Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially (depends on timing) cause...	7.3	0.0051	None reported

Also fixes CVE-2026-78437

ALAS2023-2026-3151
tomcat11, tomcat11-admin-webapps, tomcat11-docs-webapp and 5 more on amzn 2023
SUSE-SU-2026:4546-1
tomcat, tomcat10 on sles 15.6, sles 15.7
SUSE-SU-2026:4544-1
libtcnative-1-0, tomcat11 on sles 15.6, sles 15.7
OPENSUSE-SU-2026:21984-1
libtcnative-1-0, libtcnative-2-0, tomcat and 2 more on opensuse-leap 16.0
SUSE-SU-2026:23985-1
libtcnative-1-0, libtcnative-2-0, tomcat and 2 more on sles 16.0
ALAS2023-2026-3165
tomcat10, tomcat10-admin-webapps, tomcat10-docs-webapp and 5 more on amzn 2023
ALAS2023-2026-3166
tomcat9, tomcat9-admin-webapps, tomcat9-docs-webapp and 5 more on amzn 2023

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2026-78437

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