CVE-2026-33620

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Source
https://cve.org/CVERecord?id=CVE-2026-33620
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33620.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33620
Aliases
Downstream
Related
Published
2026-03-26T20:40:27.026Z
Modified
2026-04-02T13:27:54.694084Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
Summary
PinchTab: API Bearer Token Exposed in URL Query Parameter via Server Logs and Intermediary Systems
Details

PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab v0.7.8 through v0.8.3 accepted the API token from a token URL query parameter in addition to the Authorization header. When a valid API credential is sent in the URL, it can be exposed through request URIs recorded by intermediaries or client-side tooling, such as reverse proxy access logs, browser history, shell history, clipboard history, and tracing systems that capture full URLs. This issue is an unsafe credential transport pattern rather than a direct authentication bypass. It only affects deployments where a token is configured and a client actually uses the query-parameter form. PinchTab's security guidance already recommended Authorization: Bearer <token>, but v0.8.3 still accepted ?token= and included first-party flows that generated and consumed URLs containing the token. This was addressed in v0.8.4 by removing query-string token authentication and requiring safer header- or session-based authentication flows.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33620.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-598"
    ]
}
References

Affected packages

Git / github.com/pinchtab/pinchtab

Affected ranges

Type
GIT
Repo
https://github.com/pinchtab/pinchtab
Events
Introduced
f4166da8ab8cd550856c9723295a37ddeeeb2b7b
Fixed
60ce4448c30d3c68edf790875bc1167d7a7b2308
Database specific 
{
    "versions": [
        {
            "introduced": "0.7.8"
        },
        {
            "fixed": "0.8.4"
        }
    ]
}

Affected versions

v0.*
v0.7.8
v0.8.0
v0.8.1
v0.8.2
v0.8.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33620.json"