PlaywrightCapture vulnerabilities

PlaywrightCapture contains a Server-Side Request Forgery (SSRF) vulnerability in its favicon retrieval functionality. When only_global_lookup is enabled, URL validation does not cover redirects followed by aiohttp, allowing bypass of restrictions and access to local resources.

Prior to version 1.39.6, PlaywrightCapture did not sufficiently restrict navigations and resource requests initiated by rendered pages. An attacker-controlled page could exploit redirection mechanisms to open file:// URLs or request resources from private IP addresses.

The vulnerability in PlaywrightCapture stores capture-specific configuration and runtime data as mutable class-level variables instead of instance-level variables. This causes multiple Capture objects in the same Python process to share state, including HTTP headers, cookies, credentials, and captured request data.