CVE-2024-40453: squirrellyjs squirrelly v9.0.0 and fixed in v.9.0.1 was discovered to contain a code injection vulnerability v

Q: How do I fix CVE-2024-40453?

squirrelly: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2024-40453 being exploited?

CVE-2024-40453 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-40453 affect?

CVE-2024-40453 affects squirrelly. Severity is critical (CVSS 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.

Q: How urgent is CVE-2024-40453?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2024-40453 is a critical-severity flaw (CVSS 9.8) affecting squirrelly. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-94
Published	2024-08-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: squirrelly

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-21 17:15 UTCPublished CVE record published
2026-06-17 07:45 UTCUpdated Record last modified

squirrelly squirrelly DOWNGRADE

Affected: 9.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0.0

1. Check installed version

npm ls squirrelly

2. No fixed release: DOWNGRADE to a release before 9.0.0

npm view squirrelly versions npm install squirrelly@"<9.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-40453?

squirrelly: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-40453 being exploited?

CVE-2024-40453 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-40453 affect?

CVE-2024-40453 affects squirrelly. Severity is critical (CVSS 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.

How urgent is CVE-2024-40453?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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