What’s Vulnerable › Vulnerabilities

CVE-2026-81845: arben-adm mcp-sequential-thinking Import Session/Export Session server.py export_session path traversal

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-08-31
• Weakness: CWE-22

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.

Affected products

• arben-adm mcp-sequential-thinking: 0.1, 0.2, 0.3, 0.4, 0.5.0

References

• https://github.com/arben-adm/mcp-sequential-thinking/
• https://github.com/arben-adm/mcp-sequential-thinking/commit/2fad3ee8ab1d0868b6c1afb5895bc336a10e5267
• https://github.com/arben-adm/mcp-sequential-thinking/issues/17
• https://github.com/arben-adm/mcp-sequential-thinking/pull/18
• https://github.com/arben-adm/mcp-sequential-thinking/releases/tag/v0.6.0
• https://vuldb.com/cve/CVE-2026-81845
• https://vuldb.com/submit/887254
• https://vuldb.com/vuln/396171
• https://vuldb.com/vuln/396171/cti

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