CVE-2026-33622 | PinchTab up to 0.8.5 /wait code injection (GHSA-w5pc-m664-r62v)

VDB-353765 · CVE-2026-33622 · GHSA-W5PC-M664-R62V PINCHTAB UP TO 0.8.5 /WAIT CODE INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 2.6 $0-$5k 0.92+ Summaryinfo A vulnerability classified as critical has been found in PinchTab up to 0.8.5. Impacted is an unknown function of the file /wait. The manipulation leads to code injection. This vulnerability is referenced as CVE-2026-33622. Remote exploitation of the attack is possible. No exploit is available. Detailsinfo A vulnerability, which was classified as problematic, has been found in PinchTab up to 0.8.5. This issue affects some unknown processing of the file /wait. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality. The summary by CVE is: 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. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-33622 since 03/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/26/2026). MITRE ATT&CK project uses the attack technique T1059 for this issue. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Name PinchTab Version 0.8.0 0.8.1 0.8.2 0.8.3 0.8.4 0.8.5 Website Product: https://github.com/pinchtab/pinchtab/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 2.7 VulDB Meta Temp Score: 2.6 VulDB Base Score: 2.7 VulDB Temp Score: 2.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Code injection CWE: CWE-94 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/23/2026 CVE reserved 03/26/2026 +3 days Advisory disclosed 03/26/2026 +0 days VulDB entry created 03/26/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-w5pc-m664-r62v Status: Not defined CVE: CVE-2026-33622 (🔒) GCVE (CVE): GCVE-0-2026-33622 GCVE (VulDB): GCVE-100-353765 Entryinfo Created: 03/26/2026 23:15 Changes: 03/26/2026 23:15 (65) Complete: 🔍 Cache ID: 99:050:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸