{"id":"BIT-nginx-2026-90439","summary":"NGINX ngx_http_v3_module vulnerability","details":"NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with OpenSSL versions \u003c= OpenSSL 3.5.0 under certain configurations, a limited heap buffer overflow could happen while processing a TLS handshake. This can happen in a non-deterministic manner that is beyond the attacker's control. This may cause a heap buffer overflow in the NGINX worker process leading to a restart and/or limited data corruption.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system or limited data corruption. There is no control plane exposure; this is a data plane issue only.\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","aliases":["BIT-nginx-gateway-2026-90439","CVE-2026-90439"],"modified":"2026-09-26T09:15:02.723368519Z","published":"2026-09-25T12:27:27.067Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://my.f5.com/manage/s/article/K000162604"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90439"}],"affected":[{"package":{"name":"nginx","ecosystem":"Bitnami","purl":"pkg:bitnami/nginx"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.29.2"},{"fixed":"1.30.0"},{"introduced":"1.30.4"},{"fixed":"1.30.5"},{"introduced":"1.31.0"},{"fixed":"1.31.6"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/nginx/BIT-nginx-2026-90439.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}