A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. (CVE-2026-81845)
Description
A path traversal vulnerability exists in the import_session and export_session functions of the mcp_sequential_thinking/server.py component in arben-adm mcp-sequential-thinking up to version 0.5.0. This vulnerability allows remote attackers to manipulate the file_path argument to access unauthorized files. Exploit code has been publicly disclosed. Upgrading to version 0.6.0 addresses this issue.
CVSS v3.1
Score 6.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability (CVE-2026-81845) affects arben-adm mcp-sequential-thinking versions up to 0.5.0 in the import_session and export_session functions of the mcp_sequential_thinking/server.py file. The flaw is a path traversal (CWE-22) caused by improper handling of the file_path argument, enabling remote attackers to access files outside the intended directory. Public exploit disclosure exists. The issue is fixed in version 0.6.0 with patch commit 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267.
Potential Impact
Successful exploitation allows remote attackers to perform path traversal attacks, potentially leading to unauthorized reading or writing of files. The CVSS 3.1 base score is 6.3 (medium severity), reflecting low complexity and no user interaction required, with impacts on confidentiality, integrity, and availability rated as low.
Mitigation Recommendations
Upgrade arben-adm mcp-sequential-thinking to version 0.6.0 or later, which contains the official fix for this vulnerability. No other mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-j8g6-hw52-mhg7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-81845"]
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
Threat ID: 6a91a7dcacd9273b490658c0
Added to database: 08/28/2026, 15:23:08 UTC
Last enriched: 09/10/2026, 00:08:32 UTC
Last updated: 10/13/2026, 18:48:24 UTC
Views: 61
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