# 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. - Web page: https://patchblox.com/security/fix/linux/alas2023-2026-3165 - Platform: Linux - Released: Nov 7, 2026 - Priority: Urgent (Closes CVE-2026-76183, rated Critical) - CVEs: 12, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://alas.aws.amazon.com/AL2023/ALAS-2026-3165.html ## Applies to | Product | Release | Fixed in | |---|---|---| | [tomcat10](https://patchblox.com/security/data/product/linux/tomcat10.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | | [tomcat10-admin-webapps](https://patchblox.com/security/data/product/linux/tomcat10-admin-webapps.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | | [tomcat10-docs-webapp](https://patchblox.com/security/data/product/linux/tomcat10-docs-webapp.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | | [tomcat10-el-5.0-api](https://patchblox.com/security/data/product/linux/tomcat10-el-5.0-api.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | | [tomcat10-jsp-3.1-api](https://patchblox.com/security/data/product/linux/tomcat10-jsp-3.1-api.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | | [tomcat10-lib](https://patchblox.com/security/data/product/linux/tomcat10-lib.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | | [tomcat10-servlet-6.0-api](https://patchblox.com/security/data/product/linux/tomcat10-servlet-6.0-api.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | | [tomcat10-webapps](https://patchblox.com/security/data/product/linux/tomcat10-webapps.md) | amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2026-76183](https://patchblox.com/security/data/cve/CVE-2026-76183.md) | Urgent | libtcnative-1-0: security constraints for any WebSocket endpoint can be bypassed (bsc#1282629). | 9.8 | 0.0057 | | | [CVE-2026-86248](https://patchblox.com/security/data/cve/CVE-2026-86248.md) | Urgent | libtcnative-1-0: CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled | 9.8 | 0.0050 | | | [CVE-2026-86350](https://patchblox.com/security/data/cve/CVE-2026-86350.md) | Urgent | libtcnative-1-0: HTTP/2 requests can cause request header mix-ups and HTTP request smuggling (bsc#1282787). | 9.1 | 0.0048 | | | [CVE-2026-77791](https://patchblox.com/security/data/cve/CVE-2026-77791.md) | High | libtcnative-1-0: uncontrolled resource consumption when sending WebSocket close message enabled a DoS attack | 7.5 | 0.0068 | | | [CVE-2026-87022](https://patchblox.com/security/data/cve/CVE-2026-87022.md) | High | libtcnative-1-0: WebSocket message smuggling when per-message-deflate is used (bsc#1282581). | 7.5 | 0.0054 | | | [CVE-2026-75973](https://patchblox.com/security/data/cve/CVE-2026-75973.md) | High | libtcnative-1-0: improper authentication when Jakarta authentication is configured with `SimpleAuthConfigProvider` | 7.3 | 0.0052 | | | [CVE-2026-78437](https://patchblox.com/security/data/cve/CVE-2026-78437.md) | High | libtcnative-1-0: incomplete cleanup allows a malformed request to potentially cause requests from another user to fail | 7.3 | 0.0051 | | | [CVE-2026-78383](https://patchblox.com/security/data/cve/CVE-2026-78383.md) | High | libtcnative-1-0: allocation of resources without limits or throttling allows an unauthenticated AJP request to pin an | 7.5 | 0.0050 | | | [CVE-2026-77762](https://patchblox.com/security/data/cve/CVE-2026-77762.md) | High | libtcnative-1-0: stale HPACK emitter injects trailers fields into another HTTP/2 request (bsc#1282599). | 8.1 | 0.0046 | | | [CVE-2026-79677](https://patchblox.com/security/data/cve/CVE-2026-79677.md) | High | libtcnative-1-0: missing release of resource after effective lifetime and comparison using wrong factors allows for | 7.5 | 0.0042 | | | [CVE-2026-77756](https://patchblox.com/security/data/cve/CVE-2026-77756.md) | Routine | libtcnative-1-0: inconsistent interpretation of HTTP requests allows an attacker to cause one request from another user | 3.7 | 0.0053 | | | [CVE-2026-73581](https://patchblox.com/security/data/cve/CVE-2026-73581.md) | Routine | libtcnative-1-0: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore | 6.5 | 0.0016 | | --- Data as of 2026-11-11T19:49:26Z UTC. 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