{"id":"ALPINE-CVE-2025-23419","details":"When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers. This vulnerability arises when  TLS Session Tickets https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_ticket_key  are used and/or the  SSL session cache https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache  are used in the default server and the default server is performing client certificate authentication.  \n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","modified":"2026-03-09T01:28:28.086174Z","published":"2025-02-05T18:15:33.347Z","upstream":["CVE-2025-23419"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2025-23419"}],"affected":[{"package":{"name":"nginx","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/nginx?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.3-r0"}]}],"versions":["0.8.53-r0","0.8.54-r0","0.8.54-r1","1.0.11-r0","1.0.11-r1","1.0.14-r0","1.0.15-r0","1.0.4-r0","1.0.4-r1","1.0.5-r0","1.10.0-r0","1.10.1-r0","1.10.1-r1","1.10.1-r2","1.10.1-r3","1.10.1-r4","1.10.1-r5","1.10.1-r6","1.10.1-r7","1.10.1-r8","1.10.1-r9","1.10.2-r0","1.10.2-r1","1.10.3-r0","1.10.3-r1","1.10.3-r2","1.10.3-r3","1.10.3-r4","1.10.3-r5","1.12.0-r0","1.12.0-r1","1.12.0-r2","1.12.1-r0","1.12.1-r1","1.12.1-r2","1.12.1-r3","1.12.2-r0","1.12.2-r1","1.12.2-r2","1.12.2-r3","1.12.2-r4","1.12.2-r5","1.12.2-r6","1.14.0-r0","1.14.0-r1","1.14.0-r2","1.14.1-r0","1.14.2-r0","1.14.2-r1","1.16.0-r0","1.16.0-r1","1.16.0-r2","1.16.0-r3","1.16.0-r4","1.16.1-r0","1.16.1-r1","1.16.1-r2","1.16.1-r3","1.16.1-r4","1.16.1-r5","1.16.1-r6","1.16.1-r7","1.16.1-r8","1.18.0-r0","1.18.0-r1","1.18.0-r10","1.18.0-r11","1.18.0-r12","1.18.0-r13","1.18.0-r14","1.18.0-r15","1.18.0-r2","1.18.0-r3","1.18.0-r4","1.18.0-r5","1.18.0-r6","1.18.0-r7","1.18.0-r8","1.18.0-r9","1.2.2-r0","1.2.3-r0","1.2.4-r0","1.2.5-r0","1.2.6-r0","1.2.7-r0","1.2.8-r0","1.20.0-r0","1.20.1-r0","1.20.1-r1","1.20.1-r10","1.20.1-r11","1.20.1-r12","1.20.1-r13","1.20.1-r2","1.20.1-r3","1.20.1-r4","1.20.1-r5","1.20.1-r6","1.20.1-r7","1.20.1-r8","1.20.1-r9","1.20.2-r0","1.20.2-r1","1.20.2-r2","1.22.0-r0","1.22.0-r1","1.22.0-r2","1.22.0-r3","1.22.0-r4","1.22.0-r5","1.22.0-r6","1.22.0-r7","1.22.0-r8","1.22.1-r0","1.22.1-r1","1.22.1-r2","1.24.0-r0","1.24.0-r1","1.24.0-r10","1.24.0-r11","1.24.0-r12","1.24.0-r13","1.24.0-r14","1.24.0-r15","1.24.0-r16","1.24.0-r17","1.24.0-r18","1.24.0-r19","1.24.0-r2","1.24.0-r20","1.24.0-r3","1.24.0-r4","1.24.0-r5","1.24.0-r6","1.24.0-r7","1.24.0-r8","1.24.0-r9","1.26.0-r0","1.26.0-r1","1.26.0-r2","1.26.1-r0","1.26.2-r0","1.4.0-r0","1.4.0-r1","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.4.3-r1","1.4.4-r0","1.4.4-r1","1.4.4-r2","1.4.5-r0","1.4.6-r0","1.4.7-r0","1.6.0-r0","1.6.0-r1","1.6.0-r2","1.6.0-r3","1.6.1-r0","1.6.1-r1","1.6.2-r0","1.6.2-r1","1.6.2-r2","1.6.2-r3","1.6.3-r0","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.1-r0","1.8.1-r1","1.9.11-r0","1.9.14-r0","1.9.14-r1"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2025-23419.json"}},{"package":{"name":"nginx","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/nginx?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.3-r0"}]}],"versions":["0.8.53-r0","0.8.54-r0","0.8.54-r1","1.0.11-r0","1.0.11-r1","1.0.14-r0","1.0.15-r0","1.0.4-r0","1.0.4-r1","1.0.5-r0","1.10.0-r0","1.10.1-r0","1.10.1-r1","1.10.1-r2","1.10.1-r3","1.10.1-r4","1.10.1-r5","1.10.1-r6","1.10.1-r7","1.10.1-r8","1.10.1-r9","1.10.2-r0","1.10.2-r1","1.10.3-r0","1.10.3-r1","1.10.3-r2","1.10.3-r3","1.10.3-r4","1.10.3-r5","1.12.0-r0","1.12.0-r1","1.12.0-r2","1.12.1-r0","1.12.1-r1","1.12.1-r2","1.12.1-r3","1.12.2-r0","1.12.2-r1","1.12.2-r2","1.12.2-r3","1.12.2-r4","1.12.2-r5","1.12.2-r6","1.14.0-r0","1.14.0-r1","1.14.0-r2","1.14.1-r0","1.14.2-r0","1.14.2-r1","1.16.0-r0","1.16.0-r1","1.16.0-r2","1.16.0-r3","1.16.0-r4","1.16.1-r0","1.16.1-r1","1.16.1-r2","1.16.1-r3","1.16.1-r4","1.16.1-r5","1.16.1-r6","1.16.1-r7","1.16.1-r8","1.18.0-r0","1.18.0-r1","1.18.0-r10","1.18.0-r11","1.18.0-r12","1.18.0-r13","1.18.0-r14","1.18.0-r15","1.18.0-r2","1.18.0-r3","1.18.0-r4","1.18.0-r5","1.18.0-r6","1.18.0-r7","1.18.0-r8","1.18.0-r9","1.2.2-r0","1.2.3-r0","1.2.4-r0","1.2.5-r0","1.2.6-r0","1.2.7-r0","1.2.8-r0","1.20.0-r0","1.20.1-r0","1.20.1-r1","1.20.1-r10","1.20.1-r11","1.20.1-r12","1.20.1-r13","1.20.1-r2","1.20.1-r3","1.20.1-r4","1.20.1-r5","1.20.1-r6","1.20.1-r7","1.20.1-r8","1.20.1-r9","1.20.2-r0","1.20.2-r1","1.20.2-r2","1.22.0-r0","1.22.0-r1","1.22.0-r2","1.22.0-r3","1.22.0-r4","1.22.0-r5","1.22.0-r6","1.22.0-r7","1.22.0-r8","1.22.1-r0","1.22.1-r1","1.22.1-r2","1.24.0-r0","1.24.0-r1","1.24.0-r10","1.24.0-r11","1.24.0-r12","1.24.0-r13","1.24.0-r14","1.24.0-r15","1.24.0-r16","1.24.0-r17","1.24.0-r18","1.24.0-r19","1.24.0-r2","1.24.0-r20","1.24.0-r3","1.24.0-r4","1.24.0-r5","1.24.0-r6","1.24.0-r7","1.24.0-r8","1.24.0-r9","1.26.0-r0","1.26.0-r1","1.26.0-r2","1.26.1-r0","1.26.1-r1","1.26.1-r2","1.26.1-r3","1.26.2-r0","1.26.2-r1","1.26.2-r2","1.26.2-r3","1.26.2-r4","1.4.0-r0","1.4.0-r1","1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.3-r0","1.4.3-r1","1.4.4-r0","1.4.4-r1","1.4.4-r2","1.4.5-r0","1.4.6-r0","1.4.7-r0","1.6.0-r0","1.6.0-r1","1.6.0-r2","1.6.0-r3","1.6.1-r0","1.6.1-r1","1.6.2-r0","1.6.2-r1","1.6.2-r2","1.6.2-r3","1.6.3-r0","1.8.0-r0","1.8.0-r1","1.8.0-r2","1.8.0-r3","1.8.1-r0","1.8.1-r1","1.9.11-r0","1.9.14-r0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