GHSA-xqq2-4j46-vwp7 · 深刻度： medium · エコシステム： go — PinchTab has Unauthenticated Blind SSRF in Task Scheduler via Unvalidated callbackUrl
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.
総合評価: CVE-2026-33619 は公開エクスプロイトあり（50/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.25%、16 パーセンタイル） 根拠: 公開エクスプロイトが 1 件参照されています（Exploit-DB）。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.06% | 0.25% | +0.18% |
| 2 | 2026-05-07 | 0.02% | 0.06% | +0.04% |
| 3 | 2026-03-27 | — | 0.02% | — |
EPSS の全履歴 （全 3 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 4.1 | 3.1 | MEDIUM |
|
2.3 | 1.4 | [email protected] |
| 5.5 | 3.1 | MEDIUM |
|
2.3 | 2.7 | [email protected] |
GHSA-xqq2-4j46-vwp7 · 深刻度： medium · エコシステム： go — PinchTab has Unauthenticated Blind SSRF in Task Scheduler via Unvalidated callbackUrl
| URL | タグ |
|---|---|
| https://github.com/pinchtab/pinchtab/commit/c824574c3a05073dec2f5e9c219e22ffff8de445 | Patch |
| https://github.com/pinchtab/pinchtab/releases/tag/v0.8.4 | Release Notes |
| https://github.com/pinchtab/pinchtab/security/advisories/GHSA-xqq2-4j46-vwp7 | Exploit Mitigation Vendor Advisory |