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Vulnerabilities

Vulnerability · CVE-2026-33622

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-2026-33622. EPSS is 0.76%. 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
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.76%
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 through allow arbitrary JavaScript execution through and when the request uses mode, even if is disabled. correctly enforces the guard, which is disabled by default. However, in the affected releases, accepted a user-controlled expression, embedded it directly into executable JavaScript, and evaluated it in the browser context without checking the same policy. This is a security-policy bypass rather than a separate authentication bypass. Exploitation still requires authenticated API access, but a caller with the server token can execute arbitrary JavaScript in a tab context even when the operator explicitly disabled JavaScript evaluation. The current worktree fixes this by applying the same policy boundary to mode in that already exists on , while preserving the non-code wait modes. As of time of publication, a patched version is not yet available.

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-2026-33622

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-2026-33622. EPSS is 0.76%. 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-284: Improper Access Control; CWE-693: Protection Mechanism Failure; CWE-94: Code Injection. EPSS 0.76%. 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.

No public source repository is identified for this product.

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 through allow arbitrary JavaScript execution through and when the request uses mode, even if is disabled. correctly enforces the guard, which is disabled by default. However, in the affected releases, accepted a user-controlled expression, embedded it directly into executable JavaScript, and ev

  2. Jun 17, 2026 · NIST NVD

    Updated

    PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab through allow arbitrary JavaScript execution through and when the request uses mode, even if is disabled. correctly enforces the guard, which is disabled by default. However, in the affected releases, accepted a user-controlled expression, embedded it directly into executable JavaScript, and ev

Sources

  • CVE.orgVulnerability recordCVE-2026-33622

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-33622

    30-day exploitation probability 0.8%

    first.org
  • NIST NVDVulnerability recordCVE-2026-33622

    PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab through allow arbitrary JavaScript execution through and when the request uses mode, even if `security.allowEvaluate

    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.