Insecure template handling in Squirrelly

HIGH 8.8CVE-2021-32819 · GHSA-q8j6-pwqx-pm96 · Published 14/05/2021 · updated 17/06/2026

Package	Affected versions	Patched versions
squirrelly squirrelly	`= 8.0.8`	No fix yet
squirrelly npm	`< 9.0.0`	`9.0.0`

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. Version 9.0.0 has a fix for this issue. For complete details refer to the referenced GHSL-2021-023.

NVD 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.

References

nvd.nist.gov/vuln/detail/CVE-2021-32819 · ADVISORY
squirrellyjs/squirrelly#254 · WEB
squirrellyjs/squirrelly commit c12418a · WEB
squirrellyjs/squirrelly commit dca7a1e · WEB
squirrellyjs/squirrelly · PACKAGE
securitylab.github.com/advisories/GHSL-2021-023-squirrelly · ADVISORY
securitylab.github.com/advisories/GHSL-2021-023-squirrelly · Exploit

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Package

Affected versions

Patched versions

squirrelly

= 8.0.8

No fix yet

squirrelly

npm

< 9.0.0

9.0.0

Description

NVD 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.