CVE-2026-33619— pinchtab 代码问题漏洞
一分钟漏洞结论
影响对象
pinchtab pinchtab
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
pinchtab是Pinchtab开源的一个AI代理浏览器控制工具。 PinchTab 0.8.3版本存在代码问题漏洞，该漏洞源于调度器webhook交付路径验证不足，可能导致服务端请求伪造。
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一、 漏洞 CVE-2026-33619 基础信息
漏洞信息
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Vulnerability Title
PinchTab has Unauthenticated Blind SSRF in Task Scheduler via Unvalidated callbackUrl
来源: CVE Program / CVE List V5
Vulnerability Description
PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab v0.8.3 contains a server-side request forgery issue in the optional scheduler's webhook delivery path. When a task is submitted to `POST /tasks` with a user-controlled `callbackUrl`, the v0.8.3 scheduler sends an outbound HTTP `POST` to that URL when the task reaches a terminal state. In that release, the webhook path validated only the URL scheme and did not reject loopback, private, link-local, or other non-public destinations. Because the v0.8.3 implementation also used the default HTTP client behavior, redirects were followed and the destination was not pinned to validated IPs. This allowed blind SSRF from the PinchTab server to attacker-chosen HTTP(S) targets reachable from the server. This issue is narrower than a general unauthenticated internet-facing SSRF. The scheduler is optional and off by default, and in token-protected deployments the attacker must already be able to submit tasks using the server's master API token. In PinchTab's intended deployment model, that token represents administrative control rather than a low-privilege role. Tokenless deployments lower the barrier further, but that is a separate insecure configuration state rather than impact created by the webhook bug itself. PinchTab's default deployment model is local-first and user-controlled, with loopback bind and token-based access in the recommended setup. That lowers practical risk in default use, even though it does not remove the underlying webhook issue when the scheduler is enabled and reachable. This was addressed in v0.8.4 by validating callback targets before dispatch, rejecting non-public IP ranges, pinning delivery to validated IPs, disabling redirect following, and validating `callbackUrl` during task submission.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
来源: CVE Program / CVE List V5
Vulnerability Title
pinchtab 代码问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
pinchtab是Pinchtab开源的一个AI代理浏览器控制工具。 PinchTab 0.8.3版本存在代码问题漏洞，该漏洞源于调度器webhook交付路径验证不足，可能导致服务端请求伪造。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-33619 的公开POC
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|---|
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CVE-2026-33619 补丁与修复 (1)
CVE-2026-33619 厂商安全公告 (1)
CVE-2026-33619 其他参考 (1)
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Release v0.8.4 · pinchtab/pinchtab · GitHub x_refsource_MISC
同批安全公告 · pinchtab · 2026-03-26 · 共 5 条
| CVE-2026-33623 | 6.7 MEDIUM | pinchtab 资源管理错误漏洞 |
| CVE-2026-33621 | 4.8 MEDIUM | pinchtab 安全漏洞 |
| CVE-2026-33620 | 4.3 MEDIUM | pinchtab 安全漏洞 |
| CVE-2026-33622 | pinchtab 安全漏洞 |