# SUSE-SU-2026:4544-1: Security update for 2 packages SUSE-SU-2026:4544-1, released October 6, 2026, fixes 15 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/fix/linux/suse-su-2026-4544-1 - Platform: Linux - Released: Oct 6, 2026 - Priority: Urgent (Closes CVE-2026-76183, rated Critical) - CVEs: 15, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://osv.dev/vulnerability/SUSE-SU-2026:4544-1 ## Applies to | Product | Release | Fixed in | |---|---|---| | [libtcnative-1-0](https://patchblox.com/security/data/product/linux/libtcnative-1-0.md) | sles 15.6 | 1.3.9-150600.16.9.2 | | [libtcnative-1-0](https://patchblox.com/security/data/product/linux/libtcnative-1-0.md) | sles 15.7 | 1.3.9-150600.16.9.2 | | [tomcat11](https://patchblox.com/security/data/product/linux/tomcat11.md) | sles 15.6 | 11.0.26-150600.13.36.2 | | [tomcat11](https://patchblox.com/security/data/product/linux/tomcat11.md) | sles 15.7 | 11.0.26-150600.13.36.2 | ## 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-2026-86246](https://patchblox.com/security/data/cve/CVE-2026-86246.md) | Urgent | libtcnative-1-0: insecure ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF and | 9.1 | 0.0035 | | | [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-2026-86243](https://patchblox.com/security/data/cve/CVE-2026-86243.md) | High | libtcnative-1-0: buffer overread during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash | 7.5 | 0.0056 | | | [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-2026-86247](https://patchblox.com/security/data/cve/CVE-2026-86247.md) | High | libtcnative-1-0: race condition allows client certificate verification requirements to be down-graded for some | 7.4 | 0.0020 | | | [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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