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Attributed metadata history

REPORTPUBLIC METADATA

Anthropic Filesystem MCP Server: Directory Access Bypass via Improper Path Validation

A few months ago I was looking at the filesystem MCP server from Anthropic. The server allows to give an AI, like Claude Desktop, access to the local filesystem to read files or edit them and so forth. I was curious about access control and in the documentation there is a configuration setting to set allowedDirectories, which the AI should be allowed access to: As you can see the example shows two folders being allowlisted for access.

Reference details

Source category
research-report
First reported
Aug 03, 2025 08:30 UTC
Last reported
Aug 03, 2025 08:30 UTC
Catalog updated
Oct 14, 2026 02:57 UTC
Record ID
554e60daf7b3882f3ba62df070ebc2ad151eb7c4563557a3513435e68a8bbf86

Published indicators

Network indicators are visibly defanged. This page does not make them clickable or send them to another service.

No validated file hashes or network indicators are stored for this record.

Source observations

intelligence_src_c25d91fa3ad9ae9ac7

Source-provided label
Publisher RSS metadata
Evidence class
mentioned in report
Confidence
Not reported
Observed
Aug 03, 2025 08:30 UTC
Retrieved
Oct 14, 2026 02:57 UTC

This record contains metadata and attribution only. It does not host, download, unpack, render, or execute malware samples.

Feed collection status

Sources represented on this page. Publication and observation dates describe the content; successful batch dates describe local collection. A recent batch does not certify complete coverage or current provider availability.

1 sources: 0 stale, 0 needing attention, 0 paused, 0 unverified.

Review source update dates and status
  • intelligence_src_c25d91fa3ad9ae9ac7Recent successful batchLast successful batch: Last attempt:

Stale means older than twice the recorded collection interval, with a minimum of one hour; without an interval, the threshold is 24 hours. Cached content remains available while a feed is stale, paused, or unverified.