ALPINE-CVE-2026-42055
ALPINE-CVE-2026-42055
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NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers directive is set to off, and the large_client_header_buffers directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based buffer overflow 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.
CVSS 9.2 · Kritisch · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: system · web
Betroffene Produkte und Versionen
nginx Alpine:v3.21
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.26.3-r2
Auf 1.26.3-r2 aktualisieren
nginx Alpine:v3.22
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.28.3-r4
Auf 1.28.3-r4 aktualisieren
nginx Alpine:v3.23
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.28.3-r4
Auf 1.28.3-r4 aktualisieren
nginx Alpine:v3.24
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.30.3-r0
Auf 1.30.3-r0 aktualisieren