BIT-nginx-2026-42055

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Import Source

https://github.com/bitnami/vulndb/tree/main/data/nginx/BIT-nginx-2026-42055.json

JSON Data

https://api.osv.dev/v1/vulns/BIT-nginx-2026-42055

Aliases

Published

2026-06-22T05:47:00.524Z

Modified

2026-07-09T09:15:06.205397020Z

Summary

NGINX ngx_http_proxy_v2_module and ngx_http_grpc_module vulnerability

Details

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules. This vulnerability exists when the proxyhttpversion to 2 or grpcpass directives are used to proxy HTTP/2 traffic, the ignoreinvalidheaders directive is set to off, and the largeclientheader_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.

Database specific

{
    "cpes": [
        "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*"
    ],
    "severity": "Critical"
}

References

Affected packages

Bitnami / nginx

Package

Name: nginx
Purl: pkg:bitnami/nginx

Severity

9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Affected ranges

Type: SEMVER
Events: Introduced

1.30.0

Fixed

1.30.3

Introduced

1.31.1

Fixed

1.31.2

Database specific

source

"https://github.com/bitnami/vulndb/tree/main/data/nginx/BIT-nginx-2026-42055.json"