CVE-2026-33081

Source
https://cve.org/CVERecord?id=CVE-2026-33081
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33081.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33081
Aliases
Downstream
Related
Published
2026-03-20T09:05:01.753Z
Modified
2026-04-10T05:42:36.755857Z
Severity
  • 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N CVSS Calculator
Summary
PinchTab has Blind SSRF via browser-side redirect bypass in /download URL validation
Details

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.

Database specific
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33081.json",
    "cwe_ids": [
        "CWE-918"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/pinchtab/pinchtab

Affected ranges

Type
GIT
Repo
https://github.com/pinchtab/pinchtab
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed

Affected versions

v0.*
v0.1.0
v0.2.0
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.7.0
v0.7.6
v0.7.7
v0.7.8
v0.8.0
v0.8.1
v0.8.2

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33081.json"