CVE-2026-42530
EUVD-2026-3771717.06.2026, 15:16
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.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| f5 | nginx_gateway_fabric | 1.3.0 ≤ 𝑥 ≤ 1.6.2 |
| f5 | nginx_gateway_fabric | 2.0.0 ≤ 𝑥 < 2.6.4 |
| f5 | nginx_ingress_controller | 3.5.0 ≤ 𝑥 ≤ 3.7.2 |
| f5 | nginx_ingress_controller | 5.0.0 ≤ 𝑥 < 5.5.1 |
| f5 | nginx_ingress_controller | 4.0.0 |
| f5 | nginx_ingress_controller | 4.0.1 |
| f5 | nginx_instance_manager | 2.17.0 ≤ 𝑥 ≤ 2.22.0 |
| f5 | nginx_open_source | 1.31.0 ≤ 𝑥 < 1.31.2 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images | 1.30.2-1.hum1 ≤ 𝑥 < * | ADP |
Debian Releases
Common Weakness Enumeration
Vulnerability Media Exposure