{"id":"CVE-2026-33081","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.","aliases":["GHSA-qwxp-6qf9-wr4m","GO-2026-4748"],"modified":"2026-04-10T05:42:36.755857Z","published":"2026-03-20T09:05:01.753Z","related":["SUSE-SU-2026:1135-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33081.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-918"]},"references":[{"type":"WEB","url":"https://github.com/pinchtab/pinchtab/releases/tag/v0.8.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33081.json"},{"type":"ADVISORY","url":"https://github.com/pinchtab/pinchtab/security/advisories/GHSA-qwxp-6qf9-wr4m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33081"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pinchtab/pinchtab","events":[{"introduced":"0"},{"fixed":"e0c3e5748c1c3a1a0cab7790872bf0b3ec648bb4"}]}],"versions":["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"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N"}]}