{"id":"CVE-2026-33622","aliases":["GHSA-w5pc-m664-r62v","GO-2026-4824"],"url":"https://o3.security/vulnerability/CVE-2026-33622","summary":"A PinchTab Security Policy Bypass in /wait Allows Arbitrary JavaScript Execution","details":"PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab `v0.8.3` through `v0.8.5` allow arbitrary JavaScript execution through `POST /wait` and `POST /tabs/{id}/wait` when the request uses `fn` mode, even if `security.allowEvaluate` is disabled. `POST /evaluate` correctly enforces the `security.allowEvaluate` guard, which is disabled by default. However, in the affected releases, `POST /wait` accepted a user-controlled `fn` 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 `fn` mode in `/wait` that already exists on `/evaluate`, while preserving the non-code wait modes. As of time of publication, a patched version is not yet available.","published":"2026-03-26T20:44:48.220Z","modified":"2026-08-12T03:51:16.327486098Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/pinchtab/pinchtab/cmd/pinchtab","fixedVersion":null},{"ecosystem":"Go","name":"github.com/pinchtab/pinchtab","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33622.json"},{"type":"ADVISORY","url":"https://github.com/pinchtab/pinchtab/security/advisories/GHSA-w5pc-m664-r62v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33622"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:16.327486098Z"}}