CVE-2021-32819
By overwriting internal configuration options remote code execution may be triggered in downstream applications.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 58.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 58.29% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- squirrelly/squirrelly
- Source
- security-advisories@github.com
EPSS 58.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/squirrellyjs/squirrelly/commit/c12418a026f73df645ba927fd29358efe02fed1e
- https://github.com/squirrellyjs/squirrelly/commit/dca7a1e7ee91d8a6ffffb655f3f15647486db9da
- https://github.com/squirrellyjs/squirrelly/pull/254
- https://securitylab.github.com/advisories/GHSL-2021-023-squirrelly/Exploit, Third Party Advisory
- https://github.com/squirrellyjs/squirrelly/commit/c12418a026f73df645ba927fd29358efe02fed1e
- https://github.com/squirrellyjs/squirrelly/commit/dca7a1e7ee91d8a6ffffb655f3f15647486db9da
- https://github.com/squirrellyjs/squirrelly/pull/254
- https://securitylab.github.com/advisories/GHSL-2021-023-squirrelly/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.