Threats tagged 'ghsa-cf23-7qxj-xmhr'

CVE-2026-84316 is an improper input validation vulnerability in 0xJacky's nginx-ui that allows authenticated users to bypass directive validation by placing blocked directives after a semicolon on the same line. This bypass affects all guarded write paths that call the validator, enabling injection of dangerous nginx directives such as js_import, load_module, and user root. On deployments with njs or perl modules enabled, this leads to code execution in the nginx worker process, potentially as root. The vulnerability requires authentication via node secret or user JWT and has been demonstrated on version 2.3.11 of the official Docker image. The issue stems from the validator splitting config content by newlines and only inspecting the first token per line, while nginx parses multiple directives separated by semicolons on the same line.