CVE-2026-7403: geldata gel-mcp server.py fetch_rule path traversal

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-29 · updated 2026-10-26
Weakness: CWE-22

Description

A security flaw has been discovered in geldata gel-mcp 0.1.0. This impacts the function list_rules/fetch_rule of the file src/gel_mcp/server.py. The manipulation of the argument rule_name results in path traversal. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

geldata gel-mcp: 0.1.0

References

https://github.com/geldata/gel-mcp/
https://github.com/geldata/gel-mcp/issues/11
https://vuldb.com/submit/803530
https://vuldb.com/vuln/360139
https://vuldb.com/vuln/360139/cti

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