CVE-2026-81845: Path Traversal (CVSS 6.3)

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.

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CVSS v3.1 Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0034

Probability of exploitation

0.27%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-22 Path Traversal

References

Other 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

Frequently Asked Questions

What is CVE-2026-81845? +

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. It has a CVSS v3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2026-81845? +

CVE-2026-81845 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0034, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-81845? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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