TI-2026-23366 Aliases CVE-2026-29780 GHSA-389r-rccm-h3h5

eml_parser: Path Traversal in Official Example Script Leading to Arbitrary File Write

MEDIUM 58CWE-22Published 2026-03-07 · Updated 2026-03-09

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

eml_parser serves as a python module for parsing eml files and returning various information found in the e-mail as well as computed information. Prior to version 2.0.1, the official example script examples/recursively_extract_attachments.py contains a path traversal vulnerability that allows arbitrary file write outside the intended output directory. Attachment filenames extracted from parsed emails are directly used to construct output file paths without any sanitization, allowing an attacker-controlled filename to escape the target directory. This issue has been patched in version 2.0.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00276 20th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed eml_parser (GOVCERT-LU): 2.0.1eml-parser (PyPI): 2.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GOVCERT-LU	eml_parser	before 2.0.1	2.0.1	Patch available	CNA
—	eml-parser (PyPI)	before 2.0.1	2.0.1	Patch available	GHSA-389r-rccm-h3h5

eml_parser VendorGOVCERT-LU Affected before 2.0.1 Fixed in 2.0.1 Patch available CNA
eml-parser (PyPI) Vendor— Affected before 2.0.1 Fixed in 2.0.1 Patch available GHSA-389r-rccm-h3h5

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:govcert.lu:eml_parser::::::python::*	before 2.0.1	Vulnerable	GOVCERT-LU

cpe:2.3:a:govcert.lu:eml_parser:*:*:*:*:*:python:*:* Versions before 2.0.1 Vulnerable ·GOVCERT-LU

Remediation

Fix · CNA eml_parser (GOVCERT-LU) Fixed in 2.0.1
Fix · GHSA-389r-rccm-h3h5 eml-parser (PyPI) Fixed in 2.0.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-29780
2026-10-03 Alias added: GHSA-389r-rccm-h3h5

References

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences