CVE-2026-42530 - NGINX Open-Source ngx_http_v3_module vulnerability

CVE-2026-42530 - NGINX Open-Source ngx_http_v3_module vulnerability

https://cvefeed.io/rssfeed/latest.atom / Wed, 06/17/2026 - 17:45
CVE ID :CVE-2026-42530
Published : June 17, 2026, 2:04 p.m. | 1 hour, 34 minutes ago
Description :NGINX Open Source has a vulnerability in the ngx_http_v3_module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This may cause a Use-after-Free in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity: 9.2 | CRITICAL
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