CRITICAL
CVE-2026-18482
Published Aug 20, 2026
9.8
CRITICALCVSS 3.1
EPSS 1.65%
Description
Neo.mjs contains a command injection vulnerability within the FileSystemService.mjs component of the ai/mcp/server/file-system MCP server, where the checkSyntax() and runPlaywrightTest() functions unsafely interpolate caller-controlled absolutePath values into shell commands, enabling arbitrary OS command execution when an AI agent is induced to invoke these tools. Commit 88c77fc fixes these vulnerabilities.
Affected products
-
- Version 0StatusaffectedConstraints<88c77fc4
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Klarso GmbH | Neo-Mjs | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (1)
References (4)
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner certcc
Published Aug 20, 2026
Updated Aug 27, 2026
Reserved Jul 31, 2026
Link CVE-2026-18482
CISA Vulnrichment
Updated Aug 27, 2026
ENISA EUVD
EUVD-2026-63326 Assigner certcc
Published Aug 20, 2026
Updated Aug 27, 2026
Exploited since n/a
Link EUVD-2026-63326