AUGUST 28, 2026
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Case File

CVE-2026-42530

HIGH · CVSS 8.1 EPSS 3.68%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-17 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.1. It affects Nginx. It may be remotely exploitable. Exploitation may require the attacker to be authenticated.

CVE
CVE-2026-42530
Severity
HIGH
CVSS
8.1
EPSS
3.68%
Nginx

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)