Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pinchtab | Pinchtab | < 0.8.3 |
Related Weaknesses (CWE)
References
- https://github.com/pinchtab/pinchtab/releases/tag/v0.8.3ProductRelease Notes
- https://github.com/pinchtab/pinchtab/security/advisories/GHSA-qwxp-6qf9-wr4mExploitMitigationVendor Advisory
FAQ
What is CVE-2026-33081?
CVE-2026-33081 is a vulnerability with a CVSS score of 5.8 (MEDIUM). 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 validateDownload...
How severe is CVE-2026-33081?
CVE-2026-33081 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33081?
Check the references section above for vendor advisories and patch information. Affected products include: Pinchtab Pinchtab.