High

HTML Injection in marky-markdown

  • Disclosed: 03.09.2020
  • Updated: 11.10.2026 10:22

All versions of marky-markdown are vulnerable to HTML Injection. The package fails to sanitize style attributes in img tags of the markdown input. This may allow attackers to affect the size of images in the rendered HTML.

Recommendation

This package is no longer maintained. Please upgrade to @npmcorp/marky-markdown

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package marky-markdown >= 0.0.0 no fix

References

CVSS score 7.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE)
CWE-79
Platform
npm
Package
marky-markdown
Disclosed
03.09.2020
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-mg69-6j3m-jvgw - CC BY 4.0

Vulnerability history: marky-markdown

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
09.2020 09.2020
Without a fix
2
Exploited in attacks
0

Severity breakdown

  • High 1
  • Medium 1

Disclosures per year

  1. 2020: 2
  2. 2021: 0
  3. 2022: 0
  4. 2023: 0
  5. 2024: 0
  6. 2025: 0
  7. 2026: 0
  1. Medium ghsa-pxmp-fwjc-4x7q >= 0.0.0 no fix
  2. HTML Injection in marky-markdown this entry
    High · 7.3 ghsa-mg69-6j3m-jvgw >= 0.0.0 no fix

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