CVE-2026-81845 arben-adm mcp-sequential-thinking Import Session/Export Session server.py export_session path traversal
Remote attackers can exploit path traversal in the session import/export functions to read or modify arbitrary files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81845?
CVE-2026-81845 is a medium-severity path traversal vulnerability in arben-adm mcp-sequential-thinking, published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. Impacted is the function import_session/export_session of the file mcp_sequential_thinking/server.py of the component Import Session/Export Session. Such manipulation of the argument file_path 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-81845?
How do I fix CVE-2026-81845?
No fix has been published for CVE-2026-81845 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-81845 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81845 exists.
Sources
Also known as GHSA-j8g6-hw52-mhg7.