CVE-2026-81845: arben-adm mcp-sequential-thinking Import Session/Export Session server.py export_session path traversal
A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. Impacted is the function importsession/exportsession of the file mcpsequentialthinking/server.py of the component Import Session/Export Session. Such manipulation of the argument filepath leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.0 is recommended to address this issue. The name of the patch is 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267. Upgrading the affected component is recommended.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
arben-adm mcp-sequential-thinking Import Session/Export Sessionto a version that resolves this vulnerability.Fixed in 0.6.0Patch 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The attack can be launched remotely over the network and requires low-level privileges. No user interaction is required.
Which versions should be treated as affected, and what version fixes it?
Versions up to and including 0.5.0 are affected. Upgrading to version 0.6.0 is recommended; the referenced patch is 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267.
Is exploitation likely to be practical?
A public exploit has been disclosed and may be used. Systems where low-privileged remote users can reach the relevant functionality should be prioritized for upgrade.
What is the expected security impact if exploitation succeeds?
The supplied severity vector indicates low impact to confidentiality, integrity, and availability. The vulnerability is rated medium severity with a CVSS score of 6.3.