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CVE-2025-59717

Good to know:

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Date: September 18, 2025

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).

Severity Score

Related Resources (5)

https://gist.github.com/thesmartshadow/dd19665f1f51a4e3c7a766e70c9eafd0
https://www.npmjs.com/package/@digitalocean/do-markdownit
https://github.com/digitalocean/do-markdownit
https://nvd.nist.gov/vuln/detail/CVE-2025-59717
https://www.mend.io/vulnerability-database/CVE-2025-59717

Severity Score

Weakness Type (CWE)

Access of Resource Using Incompatible Type ('Type Confusion')

CWE-843

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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