How severe is CVE-2020-29007?

CVE-2020-29007 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-29007 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-29007?

CVE-2020-29007 affects Mediawiki Score. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29007?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-29007 published?

CVE-2020-29007 was published on 2023-04-15 and last updated on 2026-06-17.

CVE-2020-29007

CVE-2020-29007 is a critical-severity vulnerability in Mediawiki Score with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Mediawiki Score
Published: 2023-04-15
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-29007?: 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.
How severe is CVE-2020-29007?: CVE-2020-29007 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-29007 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29007?: CVE-2020-29007 affects Mediawiki Score. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29007?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-29007 published?: CVE-2020-29007 was published on 2023-04-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mediawiki:score:*:*:*:*:*:mediawiki:*:*

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