What is CVE-2026-33623?

CVE-2026-33623 is a medium-severity vulnerability in Pinchtab, classified under OS Command Injection. CVSS score: 6.7/10. Published 2026-03-26.

How severe is CVE-2026-33623?

Medium severity. CVSS v3 base score is 6.7 out of 10.

RCE in Pinchtab

CVE-2026-33623

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…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.000 (7.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L.

Affected products

Pinchtab — versions < 0.8.5

Weakness classification (CWE)

References

https://github.com/pinchtab/pinchtab/security/advisories/GHSA-p8mm-644p-phmh (x_refsource_CONFIRM)
https://github.com/pinchtab/pinchtab/commit/25b3374bdcdf0dad32c44d5d726bf953238cd8bd (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33623?: CVE-2026-33623 is a medium-severity vulnerability in Pinchtab, classified under OS Command Injection. CVSS score: 6.7/10. Published 2026-03-26.
How severe is CVE-2026-33623?: Medium severity. CVSS v3 base score is 6.7 out of 10.