CVE-2026-42926

EUVD-2026-30006
When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxy_http_version to 2, and also uses proxy_set_body, an attacker may be able to inject frame headers and payload bytes to the upstream peer.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.8 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 25%
Affected Products (NVD)
VendorProductVersion
f5nginx_gateway_fabric
1.3.0 ≤
𝑥
≤ 1.6.2
f5nginx_open_source
1.29.4 ≤
𝑥
≤ 1.30.0
f5nginx_gateway_fabric
2.0.0 ≤
𝑥
≤ 2.6.0
f5nginx_instance_manager
2.16.0 ≤
𝑥
≤ 2.22.0
f5nginx_ingress_controller
3.5.0 ≤
𝑥
≤ 3.7.2
f5nginx_ingress_controller
4.0.0 ≤
𝑥
≤ 4.0.1
f5nginx_ingress_controller
5.0.0 ≤
𝑥
≤ 5.4.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
nginx
bookworm
1.22.1-9+deb12u6
fixed
bookworm (security)
1.22.1-9+deb12u8
fixed
bullseye
1.18.0-6.1+deb11u3
fixed
bullseye (security)
1.18.0-6.1+deb11u7
fixed
forky
1.30.1-4
fixed
sid
1.30.1-5
fixed
trixie
1.26.3-3+deb13u4
fixed
trixie (security)
1.26.3-3+deb13u6
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
nginx
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-all-modules
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-core
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-core-debuginfo
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-debuginfo
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-debugsource
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-filesystem
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-devel
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-http-image-filter
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-http-image-filter-debuginfo
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-http-perl
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-http-perl-debuginfo
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-http-xslt-filter
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-http-xslt-filter-debuginfo
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-mail
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-mail-debuginfo
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-stream
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed
nginx-mod-stream-debuginfo
Amazon Linux 2023
1:1.30.1-1.amzn2023.0.1
fixed