CVE-2025-59717

low-risk
Published 2025-09-19

In the @digitalocean/do-markdownit package through 1.16.1 (in npm), the callout and fence_environment plugins perform .includes substring matching if allowedClasses or allowedEnvironments is a string (instead of an array).

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.4/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Do-Markdownit

Affected Vendors

Digitalocean

References (4)

Exploit https://gist.github.com/thesmartshadow/dd19665f1f51a4e3c7a766e70c9eafd0
Product https://github.com/digitalocean/do-markdownit
Product https://www.npmjs.com/package/@digitalocean/do-markdownit
Exploit https://gist.github.com/thesmartshadow/dd19665f1f51a4e3c7a766e70c9eafd0
22
/ 100
low-risk
Severity 17/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal