{"id":"CLSA-2026-1785922957","summary":"nginx: Fix of 5 CVEs","details":"- CVE-2026-40701: fix resolver use-after-free in OCSP; the resolve\n  context was leaked when a client SSL connection was terminated while\n  resolving an OCSP responder, so completion of the resolve touched\n  freed memory\n- CVE-2025-53859: fix buffer over-read in ngx_mail_smtp_module; login\n  and password storage could be left in an inconsistent state after\n  base64 decoding errors in the plain/login/cram-md5 auth methods\n- CVE-2026-28753: validate the host name resolved from the client\n  address against the character set of RFC 1034 section 3.5,\n  preventing CRLF injection into auth_http and smtp proxy requests\n- CVE-2026-42934: fix buffer over-read in ngx_http_charset_module\n  recode_from_utf8(); pass the saved byte count rather than the last\n  saved index to ngx_utf8_decode() and advance past the whole saved\n  sequence on invalid UTF-8","modified":"2026-10-26T09:43:34.844504309Z","published":"2026-08-26T15:39:23Z","upstream":["CVE-2025-53859","CVE-2026-28753","CVE-2026-40701","CVE-2026-42934"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1785922957.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53859"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28753"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40701"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42934"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-60005"}],"affected":[{"package":{"name":"nginx","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-all-modules","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-all-modules?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-core","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-core?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-filesystem","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-filesystem?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-mod-devel","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-devel?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-mod-http-image-filter","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-http-image-filter?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-mod-http-perl","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-http-perl?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-mod-http-xslt-filter","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-http-xslt-filter?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-mod-mail","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-mail?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}},{"package":{"name":"nginx-mod-stream","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/nginx-mod-stream?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.20.1-14.el9_2.1.alma.1.tuxcare.els13"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1785922957.json"}}],"schema_version":"1.9.0"}