CVE-2024-40453

CRITICALNVD 9.89.8

9.8

squirrellyjs squirrelly v9.0.0 and fixed in v.9.0.1 was discovered to contain a code injection vulnerability via the component options.varName.

CVSS v3: 9.8
EG Score: 9.8(low)
EPSS: 87.8%
KEV: Not listed

Published

August 21, 2024

Last Modified

August 23, 2024

Advisory Details (2)

Auto-updated May 30, 2026

Patch available. Sources: github_pr.

github_pr Patch Available

check that options.varName is a valid JS identifier

Patch available: squirrellyjs/squirrelly v9.1.0 (PR #262 merged 2024-07-02)

https://github.com/squirrellyjs/squirrelly/pull/262

generic

GitHub - bgub/squirrelly: Semi-embedded JS template engine that supports helpers, filters, partials, and template inheritance. 4KB minzipped, written in TypeScript ⛺ · GitHub

https://github.com/squirrellyjs/squirrelly

Affected Packages

(1 across 1 ecosystem)

npm(1)

Package	Vulnerable range	Fixed in	Dependents
squirrelly	—	9.1.0	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:16 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-07 23:28 UTCOSV refresh
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2024-40453?

CVE-2024-40453 is a critical vulnerability published on August 21, 2024. squirrellyjs squirrelly v9.0.0 and fixed in v.9.0.1 was discovered to contain a code injection vulnerability via the component options.varName.

When was CVE-2024-40453 disclosed?

CVE-2024-40453 was first published in the National Vulnerability Database on August 21, 2024, with the most recent update on August 23, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-40453 actively exploited?

CVE-2024-40453 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-40453?

CVE-2024-40453 has a CVSS v3 base score of 9.8 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..

How do I remediate CVE-2024-40453?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-40453, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-40453

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CVE-2024-40453

📅 Published

🔄 Last Modified

📋 Advisory Details (2)