Local directory enumeration via missing projectName validation
Published Jul 13, 2026 · Updated Jul 13, 2026
Path traversal in Memory Bank MCP Server 0.2.0, 0.2.1, 3.0, and 3.1 allows local users to enumerate directories outside its root. The list_project_files validation factory attaches no validators, so projectName reaches path.join and fs.readdir with ../ segments unresolved. Access to the local stdio MCP transport is required; the confirmed consequence is disclosure of directory entry names, not file contents or writes.
Summary
What happened
Path traversal in Memory Bank MCP Server 0.2.0, 0.2.1, 3.0, and 3.1 allows local users to enumerate directories outside its root. The list_project_files validation factory attaches no validators, so projectName reaches path.join and fs.readdir with ../ segments unresolved. Access to the local stdio MCP transport is required; the confirmed consequence is disclosure of directory entry names, not file contents or writes.
The record
- CVE
- CVE-2026-15524
- Published
- Jul 13, 2026
- Updated
- Jul 13, 2026
- Vendor
- alioshr
- Product
- Memory Bank MCP Server
- Classifications
- CWE-22, T1083
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 13, 2026CVE publishedPublication date reported by the CVE source.
- Jul 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.2.0
- Affected versionversion=0.2.1
- Affected versionversion=3.0
- Affected versionversion=3.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Issue 36 stdio directory-enumeration proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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