8.1
High
CVE-2026-42530 NGINX Open Source has a vulnerability in the ngx_http_v3_module module
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| NGINX Open Source 1.31 | 1.31.0 → < 1.31.2 | 1.31.2 |
| Red Hat Hardened Images 1.30 | earliest → < 1.30.2-1.hum1 | 1.30.2-1.hum1 |
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Lightspeed proxy 1 | Versions not published |
References
- my.f5.com my.f5.com
Timeline
- Published
- Last modified
Other CVEs of NGINX Open Source
The 35 CVEs of NGINX Open Source →
CVE-2026-95101
Description
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module
5.3
Medium
CVE-2026-93479
A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root…
8.1
High
CVE-2026-97205
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module
8.1
High
CVE-2026-15176
A vulnerability exists in NGINX Plus and NGINX Open Source when a location is configured that uses the alias directive…
8.1
High