CVE-2020-29007: Mediawiki Score

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

The Score extension through 0.3.0 for MediaWiki has a remote code execution vulnerability due to improper sandboxing of the GNU LilyPond executable. This allows any user with an ability to edit articles (potentially including unauthenticated anonymous users) to execute arbitrary Scheme or shell code by using crafted {{Image data to generate musical scores containing malicious code.

Affected products

• Mediawiki Score: up to and including 0.3.0

Published 2023-04-15. Last modified 2026-06-17.