ALAS2023-2026-3165: Security update for 8 packages

ALAS2023-2026-3165, released November 7, 2026, fixes 12 CVEs across 8 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

3 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0068

52nd percentile

Priority of the 12 CVEs

Patch now 0
                                Urgent 3
                                High 7
                                Routine 2

Fixed package versions

Product	Release	Fixed in
tomcat10	amzn 2023	1:10.1.60-1.amzn2023.0.1
tomcat10-admin-webapps	amzn 2023	1:10.1.60-1.amzn2023.0.1
tomcat10-docs-webapp	amzn 2023	1:10.1.60-1.amzn2023.0.1
tomcat10-el-5.0-api	amzn 2023	1:10.1.60-1.amzn2023.0.1
tomcat10-jsp-3.1-api	amzn 2023	1:10.1.60-1.amzn2023.0.1
tomcat10-lib	amzn 2023	1:10.1.60-1.amzn2023.0.1
tomcat10-servlet-6.0-api	amzn 2023	1:10.1.60-1.amzn2023.0.1
tomcat10-webapps	amzn 2023	1:10.1.60-1.amzn2023.0.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-76183	libtcnative-1-0: security constraints for any WebSocket endpoint can be bypassed (bsc#1282629).	9.8	0.0057	None reported
Urgent	CVE-2026-86248	libtcnative-1-0: CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled	9.8	0.0050	None reported
Urgent	CVE-2026-86350	libtcnative-1-0: HTTP/2 requests can cause request header mix-ups and HTTP request smuggling (bsc#1282787).	9.1	0.0048	None reported
High	CVE-2026-77791	libtcnative-1-0: uncontrolled resource consumption when sending WebSocket close message enabled a DoS attack	7.5	0.0068	None reported
High	CVE-2026-87022	libtcnative-1-0: WebSocket message smuggling when per-message-deflate is used (bsc#1282581).	7.5	0.0054	None reported
High	CVE-2026-75973	libtcnative-1-0: improper authentication when Jakarta authentication is configured with `SimpleAuthConfigProvider`	7.3	0.0052	None reported
High	CVE-2026-78437	libtcnative-1-0: incomplete cleanup allows a malformed request to potentially cause requests from another user to fail	7.3	0.0051	None reported
High	CVE-2026-78383	libtcnative-1-0: allocation of resources without limits or throttling allows an unauthenticated AJP request to pin an	7.5	0.0050	None reported
High	CVE-2026-77762	libtcnative-1-0: stale HPACK emitter injects trailers fields into another HTTP/2 request (bsc#1282599).	8.1	0.0046	None reported
High	CVE-2026-79677	libtcnative-1-0: missing release of resource after effective lifetime and comparison using wrong factors allows for	7.5	0.0042	None reported
Routine	CVE-2026-77756	libtcnative-1-0: inconsistent interpretation of HTTP requests allows an attacker to cause one request from another user	3.7	0.0053	None reported
Routine	CVE-2026-73581	libtcnative-1-0: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore	6.5	0.0016	None reported

Also fixes CVE-2026-76183

RHSA-2026:93618
jws7-mod_cluster, jws7-tomcat, jws7-tomcat-native on RHEL 10
RHSA-2026:96228
jws6-mod_cluster, jws6-tomcat, jws6-tomcat-native on RHEL 10
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
ALAS2023-2026-3166
tomcat9, tomcat9-admin-webapps, tomcat9-docs-webapp and 5 more on amzn 2023

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-3165.html

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