T08 · Insecure Dependencies
- Location
SKILL.md:362- Finding
Unpinned Third-Party Dependency Used with an Authenticated Mail Browser
- Content
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Vulnerability Details
File Location:
SKILL.md:362
Vulnerability Type: Unpinned third-party dependency in a sensitive execution context
Risk Level: MediumVulnerable Code Snippet:
markdown | browser-use | CLI工具 | 必需 | `uv pip install browser-use[cli]` |Related privileged usage at
SKILL.md:271-273:bash browser-use --browser real open https://mail.google.com browser-use state browser-use screenshot inbox.pngTechnical Analysis
The Skill instructs users or agents to install
browser-use[cli]without a pinned version, lockfile, package hash, or integrity verification. Consequently, installation resolves whatever package version and dependency graph the configured package index serves at execution time.The dependency is subsequently intended to operate a real browser with an existing authenticated mailbox session. This makes the dependency security-sensitive: installed package code may execute locally and interact with browser state, mailbox content, attachments, and any data available to the invoking agent.
The audit did not establish that the named package is malicious. The confirmed issue is the absence of dependency pinning and integrity controls despite use in a high-sensitivity environment.
Attack Path
- An attacker compromises the relevant package, a transitive dependency, its publisher account, or the configured package index.
- The attacker publishes or serves a modified version containing malicious installation-time or runtime behavior.
- A user or agent runs
uv pip install browser-use[cli]. - Because no version or hash is constrained, the environment installs the attacker-controlled release or dependency.
- The package executes locally and is invoked against a real browser.
- The compromised component accesses or manipulates authenticated mailbox content, browser-session data, downloaded attachments, screenshots, or other information availa ...[truncated 903 chars]
- Remediation
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Remediation Suggestions
- Pin
browser-useand all transitive dependencies to reviewed versions in a lockfile. - Require cryptographic hashes for downloaded distributions and reject mismatches.
- Verify that the package is obtained from its official publisher and an approved package index.
- Use an internal, controlled dependency mirror after malware and provenance scanning.
- Install and run the package inside an isolated virtual environment or container with minimal filesystem and network permissions.
- Use a dedicated browser profile containing only the mailbox required for the task rather than a general-purpose authenticated profile.
- Grant the mailbox account only the minimum permissions necessary and avoid administrator accounts.
- Restrict outbound network access to explicitly approved email and notification endpoints.
- Record the approved package version, hashes, source, and update-review process in
SKILL.md. - Re-audit dependency updates before changing the pinned version.
- Pin