CVE-2026-45711
Medium · 5.9Mailpit: Path traversal & arbitrary file write in mailpit dump --http via attacker-controlled message IDs
CVSS
5.9
EPSS
0.4%
Published
May 19, 2026
CISA due date
—
The record
The mailpit dump --http <base-url> <out-dir> sub-command downloads every message from a remote Mailpit instance and writes each one as <id>.eml inside the user-supplied output directory. The message ID field is taken verbatim from the JSON response of the remote server and concatenated into the output path with path.Join, which silently normalizes .. segments. A malicious HTTP server impersonating Mailpit can therefore make mailpit dump write attacker-controlled bytes to any path the running user can write, fully outside the intended output directory.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-81163 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')… CWE-22
- CVE-2026-112049 Vita3K before build 4187 contains a path traversal (zip slip) vulnerability in… CWE-22
- CVE-2026-112005 WhoDB 0.104.0 before 0.135.0 contains a path traversal vulnerability that allows remote… CWE-22
- CVE-2026-61702 OpenPrinting CUPS is an open source printing system for Linux and other Unix-like… CWE-22
- CVE-2026-104871 The Angular SSR is a server-rise rendering tool for Angular applications. CWE-22
- CVE-2026-102991 Mako is a template library written in Python. CWE-22
- CVE-2026-101894 The decompress package for Node.js extracts archives. CWE-22
- CVE-2026-100689 GitPython before 3.1.62 does not validate the `path` field read from an untrusted… CWE-22