CVE-2021-32819

Remote code execution in squirrelly

HIGH
8.8
CVSS Score
Published: May 14, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:53 AM UTC
2 products affected across 2 vendorsSquirrellySquirrelly

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Severity
HIGH8.8
Exploit prediction
EPSS 58%

Description

Squirrelly is a template engine implemented in JavaScript that works out of the box with ExpressJS. Squirrelly mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options remote code execution may be triggered in downstream applications. This issue is fixed in version 9.0.0. For complete details refer to the referenced GHSL-2021-023.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 9.0.0
Affected range stops below 9.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200NVD-CWE-noinfo

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