CVE-2026-26329

描述

## Summary Authenticated attackers can read arbitrary files from the Gateway host by supplying absolute paths or path traversal sequences to the browser tool's `upload` action. The server passed these paths to Playwright's `setInputFiles()` APIs without restricting them to a safe root. Severity remains **High** due to the impact (arbitrary local file read on the Gateway host), even though exploitation requires authenticated access. ## Exploitability / Preconditions This is not a "drive-by" issue. An attacker must: - Reach the Gateway HTTP surface (or otherwise invoke the same browser control hook endpoints). - Present valid Gateway auth (bearer token / password), as required by the Gateway configuration. - In common default setups, the Gateway binds to loopback and the onboarding wizard generates a gateway token even for loopback. - Have the `browser` tool permitted by tool policy for the target session/context (and have browser support enabled). If an operator exposes the Gateway beyond loopback (LAN/tailnet/custom bind, reverse proxy, tunnels, etc.), the impact increases accordingly. ## Affected Packages / Versions - Package: `openclaw` (npm) - Vulnerable: `< 2026.2.14` (includes latest published `2026.2.13`) - Patched: `>= 2026.2.14` (planned next release) ## Details **Entry points**: - `POST /tools/invoke` with `{"tool":"browser","action":"upload",...}` - `POST /hooks/file-chooser` (browser control hook) When the upload paths are not validated, Playwright reads the referenced files from the local filesystem and attaches them to a page-level `<input type="file">`. Contents can then be exfiltrated by page JavaScript (e.g. via `FileReader`) or via agent/browser snapshots. Impact: arbitrary local file read on the Gateway host (confidentiality impact). ## Fix Upload paths are now confined to OpenClaw's temp uploads root (`DEFAULT_UPLOAD_DIR`) and traversal/escape paths are rejected. This fix was implemented internally; the reporter provided a clear reproduction and impact analysis. Fix commit(s): - 3aa94afcfd12104c683c9cad81faf434d0dadf87 Thanks @p80n-sec for reporting.

如何修補 CVE-2026-26329

要修補 CVE-2026-26329,請將受影響套件升級到下列已修補版本。

• —升級至 2026.2.14 或更新版本

CVE-2026-26329 正在被利用嗎?

低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。