CVE-2025-67898Public exploit

Local file disclosure via unrestricted mj-include paths

Published Dec 14, 2025 · Updated Dec 14, 2025

Absolute path traversal in MJML through 4.18.0 allows local users to test file existence and read files through CSS mj-include directives. The XML parser resolves the path attribute against its working directory and passes the resulting absolute path to fs.readFileSync without confining it to that directory. Exploitation requires the compiler to process attacker-controlled MJML; CSS includes disclose file contents, while other includes provide an existence oracle.

CVSS severity4.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Absolute path traversal in MJML through 4.18.0 allows local users to test file existence and read files through CSS mj-include directives. The XML parser resolves the path attribute against its working directory and passes the resulting absolute path to fs.readFileSync without confining it to that directory. Exploitation requires the compiler to process attacker-controlled MJML; CSS includes disclose file contents, while other includes provide an existence oracle.

The record

CVE
CVE-2025-67898
Published
Dec 14, 2025
Updated
Dec 14, 2025
Vendor
MJML
Product
MJML
Classifications
CWE-36, T1005, T1083
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=4.18.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

MJML · MJMLversion=0 <=4.18.0

Published CVSS scores

4.5MITRECVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-36Absolute Path Traversal
T1005Data from Local System
T1083File and Directory Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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