CVE-2026-33622
PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser.
Published Mar 26, 2026 · corrected/updated Jun 17, 2026 · pinchtab pinchtab · evidence confidence medium
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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-33622 is a medium public vulnerability record for pinchtab pinchtab. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether pinchtab pinchtab is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: pinchtab/pinchtab. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 6.1. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-284, CWE-693, CWE-94. Sources contributing to this record: cve_org, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
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.
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
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
Affected
- cpe pinchtab/pinchtabversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-33622
Official CVE identifier
cve.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