fatbobman mail-mcp-bridge up to 1.3.3 src/mail_mcp_server.py message_ids path traversal

Summaryinfo

A vulnerability classified as critical has been found in fatbobman mail-mcp-bridge up to 1.3.3. Affected by this vulnerability is an unknown functionality of the file src/mail_mcp_server.py. The manipulation of the argument message_ids leads to path traversal. This vulnerability is uniquely identified as CVE-2026-7386. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in fatbobman mail-mcp-bridge up to 1.3.3. It has been rated as critical. This issue affects some unknown processing of the file src/mail_mcp_server.py. The manipulation of the argument message_ids with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-7386. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept.

Upgrading to version 1.3.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 638b162b26532e32fa8d8047f638537dbdfe197a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• fatbobman

Name

• mail-mcp-bridge

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3

License

• open-source

Website

• Product: https://github.com/fatbobman/mail-mcp-bridge/

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #803096: fatbobman mail-mcp-bridge d9e7d9acc2abcf9da8252d76506fc5afbc08d08e Path Traversal (by LittleW)

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