geldata gel-mcp 0.1.0 src/gel_mcp/server.py list_rules/fetch_rule rule_name path traversal

Summaryinfo

A vulnerability has been found in geldata gel-mcp 0.1.0 and classified as critical. Affected is the function list_rules/fetch_rule of the file src/gel_mcp/server.py. This manipulation of the argument rule_name causes path traversal. The identification of this vulnerability is CVE-2026-7403. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in geldata gel-mcp 0.1.0 and classified as critical. Affected by this vulnerability is the function list_rules/fetch_rule of the file src/gel_mcp/server.py. The manipulation of the argument rule_name with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-7403. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26287). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• geldata

Name

• gel-mcp

Version

• 0.1.0

Website

• Product: https://github.com/geldata/gel-mcp/

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #803530: geldata gel-mcp 0.1.0 Path Traversal (by LargeW)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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