CVE-2026-33081: PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. Versions 0.8.2 and below have a Blind SSRF vulnerability in the…

PriorityP419low3.7CVSS 3.1

AVNACHPRNUINSUCNILAN

EPSS

0.29%

20.5th percentile

PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. Versions 0.8.2 and below have a Blind SSRF vulnerability in the /download endpoint. The validateDownloadURL() function only checks the initial user-supplied URL, but the embedded Chromium browser can follow attacker-controlled redirects/navigations to internal network addresses after validation. Exploitation requires security.allowDownload=true (disabled by default), limiting real-world impact. An attacker-controlled page can use JavaScript redirects or resource requests to make the browser reach internal services from the PinchTab host, resulting in a blind Server-Side Request Forgery (SSRF) condition against internal-only services. The issue has been patched in version 0.8.3.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
github.com	pinchtab_pinchtab	>= 0 < 0.8.3	0.8.3
pinchtab	pinchtab	< 0.8.3	0.8.3

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