Host command execution via nested command substitution
Published Oct 8, 2025 · Updated Oct 8, 2025
OS command injection in Desktop Commander MCP 0.2.13 and earlier allows remote authenticated users to execute arbitrary host commands. CommandManager validates only the outer command token and does not recursively inspect shell substitutions such as $() or backticks against the blocklist. Access through an MCP client is required, and injected commands execute with the operating-system privileges of the account running the server.
Summary
What happened
OS command injection in Desktop Commander MCP 0.2.13 and earlier allows remote authenticated users to execute arbitrary host commands. CommandManager validates only the outer command token and does not recursively inspect shell substitutions such as $() or backticks against the blocklist. Access through an MCP client is required, and injected commands execute with the operating-system privileges of the account running the server.
The record
- CVE
- CVE-2025-11491
- Published
- Oct 8, 2025
- Updated
- Oct 8, 2025
- Vendor
- wonderwhy-er
- Product
- Desktop Commander MCP
- Classifications
- CWE-78, CWE-77, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 8, 2025CVE publishedPublication date reported by the CVE source.
- Oct 8, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
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=0.2.10
- Affected versionversion=0.2.11
- Affected versionversion=0.2.12
- Affected versionversion=0.2.13
- Affected versionversion=0.2.2
- Affected versionversion=0.2.3
- Affected versionversion=0.2.4
- Affected versionversion=0.2.5
- Affected versionversion=0.2.6
- Affected versionversion=0.2.7
- Affected versionversion=0.2.8
- Affected versionversion=0.2.9
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
- Command Blocklist Bypass Via Command Substitution proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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