PT-2025-38507 · Digitalocean · @Digitalocean/Do-Markdownit

Thesmartshadow · Published 2025-09-19 · Updated 2026-03-06 · CVE-2025-59717

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions @digitalocean/do-markdownit versions through 1.16.1

Description The callout and fence environment plugins in the @digitalocean/do-markdownit package perform .includes substring matching if allowedClasses or allowedEnvironments is a string instead of an array.

Recommendations @digitalocean/do-markdownit versions prior to 1.16.1 At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Type Confusion

Weakness Enumeration

CWE-843

Related Identifiers

CVE-2025-59717

GHSA-2H8J-8R9P-849F

Affected Products

@Digitalocean/Do-Markdownit

References · 12

• 🔥 https://gist.github.com/thesmartshadow/dd19665f1f51a4e3c7a766e70c9eafd0 · Exploit
• https://osv.dev/vulnerability/GHSA-2h8j-8r9p-849f · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-59717 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-59717 · Security Note
• https://github.com/digitalocean/do-markdownit · Note
• https://twitter.com/CVEnew/status/1968923568051302661 · Twitter Post
• https://npmjs.com/package/@digitalocean/do-markdownit · Note
• https://twitter.com/Alishmery2/status/2029815716086419803 · Twitter Post
• https://t.me/cveNotify/135904 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1968974382509719767 · Twitter Post
• https://t.me/CVEtracker/32912 · Telegram Post
• https://twitter.com/Alishmery2/status/2010765188773925227 · Twitter Post