Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-33081— PinchTab has Blind SSRF via browser-side redirect bypass in /download URL validation

Quick assessment

Affected
pinchtab pinchtab
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pinchtab是Pinchtab开源的一个AI代理浏览器控制工具。 PinchTab 0.8.2及之前版本存在代码问题漏洞，该漏洞源于/download端点存在盲服务端请求伪造，可能导致访问内部网络服务。

CVSS 5.8 · Medium EPSS 0.29% · P22

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-33081

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
PinchTab has Blind SSRF via browser-side redirect bypass in /download URL validation
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
pinchtab 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pinchtab是Pinchtab开源的一个AI代理浏览器控制工具。 PinchTab 0.8.2及之前版本存在代码问题漏洞，该漏洞源于/download端点存在盲服务端请求伪造，可能导致访问内部网络服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pinchtab pinchtab < 0.8.3 -

II. Public POCs for CVE-2026-33081

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-33081

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-33081 (1)

Vendor Pages for CVE-2026-33081 (1)

IV. Related Vulnerabilities

Same product: pinchtab
Same vendor: pinchtab
Same weakness: CWE-918