PT-2020-13277 · Mjml · Mjml

Julien Ahrens · Published 2020-06-16 · Updated 2025-12-14 · CVE-2020-12827

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L

Name of the Vulnerable Software and Affected Versions MJML versions prior to 4.6.3

Description The issue is related to a path traversal vulnerability when processing the mj-include directive within an MJML document.

Recommendations For versions prior to 4.6.3, update to version 4.6.3 or later to resolve the issue. As a temporary workaround, consider restricting the use of the mj-include directive until a patch is applied.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2020-12827

GHSA-4HCH-R9XF-6VFR

Affected Products

Mjml

References · 14

• 🔥 http://seclists.org/fulldisclosure/2020/Jun/23 · Exploit
• 🔥 http://packetstormsecurity.com/files/158111/MJML-4.6.2-Path-Traversal.html · Exploit
• https://github.com/mjmlio/mjml/commit/30e29ed2cdaec8684d60a6d12ea07b611c765a12 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-12827 · Security Note
• https://osv.dev/vulnerability/GHSA-4hch-r9xf-6vfr · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-12827 · Vendor Advisory
• https://mjml.io/community · Vendor Advisory
• https://github.com/mjmlio/mjml/releases/tag/v4.6.3 · Note
• https://github.com/mjmlio/mjml · Note
• https://t.me/defcon_news/49778 · Telegram Post
• https://t.me/CVEtracker/39783 · Telegram Post
• https://rcesecurity.com · Note
• https://twitter.com/mjmlio · Note
• https://t.me/cveNotify/145721 · Telegram Post