Project Subscriptions
No data.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-m9mq-7m7q-xc6p | browse-mcp has an arbitrary file write via unconfined download and state paths |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 25 Aug 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Tue, 25 Aug 2026 16:45:00 +0000
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| Description | browse-mcp is a Playwright-based headless-browser MCP server for MCP-capable agents. Prior to 0.8.2, browser_download writes a fetched response body to join(save_dir, filename) without validating the caller-controlled save_dir, while browser_save_state and browser_load_state honor a caller-controlled path unchanged. A malicious MCP client, or an autonomous agent steered by indirect prompt injection on a visited page, can choose an arbitrary save_dir or state path and a URL whose response body becomes attacker-controlled file contents, allowing writes to any path the process can reach, including ~/.bashrc, autostart entries, or cron files, and potentially leading to host code execution. The force_fetch fallback also uses a raw fetch() that bypasses the BROWSE_MCP_ALLOWED_ORIGINS origin fence. This issue is fixed in version 0.8.2. | |
| Title | browse-mcp: Arbitrary file write via unconfined download and state paths | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV4_0
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-25T19:00:25.437Z
Reserved: 2026-06-16T23:11:20.213Z
Link: CVE-2026-55557
Updated: 2026-08-25T19:00:21.989Z
Status : Received
Published: 2026-08-25T17:17:32.357
Modified: 2026-08-25T19:16:49.923
Link: CVE-2026-55557
No data.
OpenCVE Enrichment
Updated: 2026-08-25T21:00:04Z
Github GHSA