CVE-2026-42926 — NGINX ngx_http_proxy_v2_module vulnerability

CVE-2026-42926

NGINX ngx_http_proxy_v2_module vulnerability PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
F5 / NGINX Open Source	unaffected 1.31.0 before *; affected 1.29.4 before 1.30.1

CWE

CWE-172

References

https://my.f5.com/manage/s/article/K000161131

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.