NGINX Plus and NGINX Open Source - Use-After-Free in ngx_http_ssl_module
Title source: llmExploitation Summary
EIP tracks 1 public exploit for CVE-2026-40701. PoCs published by edgecases-PurpleHax.
AI-analyzed exploit summary This repository provides intentionally vulnerable Docker images for multiple nginx CVEs (CVE-2026-40701, CVE-2026-42934, CVE-2026-42945, CVE-2026-42946) to facilitate lab testing. It includes detailed configurations and explanations for each vulnerability but does not contain functional exploit code.
Description
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl_verify_client directive is set to "on" or "optional," and the ssl_ocsp directive is set to "on" or the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond its control that may cause a heap-use-after-free error in the NGINX worker process. This vulnerability may result in limited modification of data or the NGINX worker process restarting. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Exploits (1)
This repository provides intentionally vulnerable Docker images for multiple nginx CVEs (CVE-2026-40701, CVE-2026-42934, CVE-2026-42945, CVE-2026-42946) to facilitate lab testing. It includes detailed configurations and explanations for each vulnerability but does not contain functional exploit code.
References (1)
Scores
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L