Path Traversal in Fatbobman Mail-Mcp-Bridge
CVE-2026-7386
A flaw has been found in fatbobman mail-mcp-bridge up to 1.3.3. Affected is an unknown function of the file src/mail_mcp_server.py. Executing a manipulation of the argument message_ids can lead to path traversal. The attack can be executed remotely. The exploit has been published and may be used. Upgrading to version 1.3.4 is able to address this issue. This patch is called 638b162b26532e32fa8d8047f638537dbdfe197a. Upgrading the affected component is recommended.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (48.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Fatbobman Mail-Mcp-Bridge — versions 1.3.0, 1.3.1, 1.3.2
Weakness classification (CWE)
References
- vuldb.com/vuln/360107 (technical-description, vdb-entry)
- vuldb.com/vuln/360107/cti (signature, permissions-required)
- vuldb.com/submit/803096 (third-party-advisory)
- github.com/fatbobman/mail-mcp-bridge/issues/2 (issue-tracking, exploit)
- github.com/fatbobman/mail-mcp-bridge/commit/638b162b26532e32fa8d8047f638537dbdf… (patch)
- github.com/fatbobman/mail-mcp-bridge/releases/tag/1.3.4 (patch)
- github.com/fatbobman/mail-mcp-bridge/ (product)
Frequently asked questions
- What is CVE-2026-7386?
- CVE-2026-7386 is a high-severity vulnerability in Fatbobman Mail-Mcp-Bridge, classified under Path Traversal. CVSS score: 7.3/10. Published 2026-04-29.
- How severe is CVE-2026-7386?
- High severity. CVSS v3 base score is 7.3 out of 10.