{"cve":"CVE-2026-33623","nvd":{"published":"2026-03-26T21:17:06.950","modified":"2026-06-17T10:37:48.250","status":"Analyzed","description":"PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab `v0.8.4` contains a Windows-only command injection issue in the orphaned Chrome cleanup path. When an instance is stopped, the Windows cleanup routine builds a PowerShell `-Command` string using a `needle` derived from the profile path. In `v0.8.4`, that string interpolation escapes backslashes but does not safely neutralize other PowerShell metacharacters. If an attacker can launch an instance using a crafted profile name and then trigger the cleanup path, they may be able to execute arbitrary PowerShell commands on the Windows host in the security context of the PinchTab process user. This is not an unauthenticated internet RCE. It requires authenticated, administrative-equivalent API access to instance lifecycle endpoints, and the resulting command execution inherits the permissions of the PinchTab OS user rather than bypassing host privilege boundaries. Version 0.8.5 contains a patch for the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":7.2},"cwes":["CWE-78","CWE-400"],"references":["https://github.com/pinchtab/pinchtab/commit/25b3374bdcdf0dad32c44d5d726bf953238cd8bd","https://github.com/pinchtab/pinchtab/security/advisories/GHSA-p8mm-644p-phmh","https://github.com/pinchtab/pinchtab/security/advisories/GHSA-p8mm-644p-phmh"],"products":["pinchtab:pinchtab"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-33623","score":0.03016,"percentile":0.87434,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-p8mm-644p-phmh","url":"https://osv.dev/vulnerability/GHSA-p8mm-644p-phmh","summary":"PinchTab: OS Command Injection via Profile Name in Windows Cleanup Routine Enables Arbitrary Command Execution","modified":"2026-03-27T21:32:48.288546Z","packages":[{"ecosystem":"Go","name":"github.com/pinchtab/pinchtab/cmd/pinchtab","purl":"pkg:golang/github.com/pinchtab/pinchtab/cmd/pinchtab","ranges":["<0.8.5"],"fixed":["0.8.5"]},{"ecosystem":"Go","name":"github.com/pinchtab/pinchtab","purl":"pkg:golang/github.com/pinchtab/pinchtab","ranges":["<0.8.5"],"fixed":["0.8.5"]}]},{"id":"GO-2026-4823","url":"https://osv.dev/vulnerability/GO-2026-4823","summary":"PinchTab: OS Command Injection via Profile Name in Windows Cleanup Routine Enables Arbitrary Command Execution in github.com/pinchtab/pinchtab","modified":"2026-03-26T21:04:04.217801Z","packages":[{"ecosystem":"Go","name":"github.com/pinchtab/pinchtab","purl":"pkg:golang/github.com/pinchtab/pinchtab","ranges":["<0.8.5"],"fixed":["0.8.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}