CVE-2020-36604: hoek before 8.5.1 and 9.x before 9.0.3 allows prototype poisoning in the clone function.

Q: How do I fix CVE-2020-36604?

hoek: upgrade to 8.5.1, 9.0.3. Exact commands for each OS are on this page.

Q: Is CVE-2020-36604 being exploited?

CVE-2020-36604 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-2020-36604 affect?

CVE-2020-36604 affects hoek. Severity is high (CVSS 8.1). hoek before 8.5.1 and 9.x before 9.0.3 allows prototype poisoning in the clone function.

Q: How urgent is CVE-2020-36604?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.1REMOTEUPGRADE

CVE-2020-36604 is a high-severity flaw (CVSS 8.1) affecting hoek. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

hoek before 8.5.1 and 9.x before 9.0.3 allows prototype poisoning in the clone function.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-1321
Published	2022-09-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: hapijs

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

Am I affected?

Timeline

2022-09-23 06:15 UTCPublished CVE record published
2026-06-17 03:15 UTCUpdated Record last modified

hapijs hoek UPGRADE

Affected: < 8.5.1 · >= 9.0 and < 9.0.3

Fixed in: 8.5.1, 9.0.3

Safe to downgrade to: a release before 9.0

1. Check installed version

npm ls hoek

2. UPGRADE to 8.5.1

npm install hoek@">=8.5.1"

3. If no update is available yet, DOWNGRADE to a release before 9.0

npm view hoek versions npm install hoek@"<9.0"

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-2020-36604?

hoek: upgrade to 8.5.1, 9.0.3. Exact commands for each OS are on this page.

Is CVE-2020-36604 being exploited?

CVE-2020-36604 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-2020-36604 affect?

CVE-2020-36604 affects hoek. Severity is high (CVSS 8.1). hoek before 8.5.1 and 9.x before 9.0.3 allows prototype poisoning in the clone function.

How urgent is CVE-2020-36604?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

References

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