9.8

CVE-2020-29007: mediawiki score Code Injection

CVSS: 9.8v3.1CriticalModified
Published 15-04-2023Last modified 06-02-2025
Open JSON

Vulnerability summary

CVE-2020-29007 is a critical (CVSS 9.8) Code Injection vulnerability in mediawiki score. EPSS estimates a 2.32% chance of exploitation in the next 30 days, higher than 83.2% of scored vulnerabilities. 3 public exploits are recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
2.32%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits3github, reference

Timeline

  1. 15-04-2023
    PublishedVulnerability first disclosed.
  2. 06-02-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

2.32%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

0.00 pp

From 2.32% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.32%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

3 found
  • githubUnverified

    Cve 2020 29007

    Maturity: poc

  • referenceUnverified

    Exploit Reference (phabricator.wikimedia.org)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (seqred.pl)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Mediawiki1 product

1 vendor · 1 product

References

5 links