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Vulnerabilities

Vulnerability · CVE-2026-33623

PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser.

Published Mar 26, 2026 · catalog updated Jun 17, 2026 · PinchTab is a standalone

Check if you run it

No confirmed exploitation is on record for CVE-2026-33623. EPSS is 3.44%. Act only if a listed version of PinchTab is a standalone is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (PinchTab is a standalone).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.44%
Remediation
Advisory link
Affected products
cpe pinchtab/pinchtab

PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab 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 string using a derived from the profile path. In , 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe pinchtab/pinchtabversion unspecified

How to fix CVE-2026-33623

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-33623. EPSS is 3.44%. Act only if a listed version of PinchTab is a standalone is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption; CWE-78: OS Command Injection. EPSS 3.44%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 26, 2026 · NIST NVD

    Detected

    PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab 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 string using a derived from the profile path. In , that string interpolation escapes backslashes but does not safely neutralize other

  2. Jun 17, 2026 · NIST NVD

    Updated

    PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab 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 string using a derived from the profile path. In , that string interpolation escapes backslashes but does not safely neutralize other

Sources

  • CVE.orgVulnerability recordCVE-2026-33623

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-33623

    30-day exploitation probability 3.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-33623

    PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab 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 `-Co

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.