How severe is GHSA-4wcx-c9c4-89p2?

GHSA-4wcx-c9c4-89p2 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-4wcx-c9c4-89p2?

GHSA-4wcx-c9c4-89p2 affects the following packages: react-datepicker-plus (npm). Ecosystems affected: npm.

How do I fix GHSA-4wcx-c9c4-89p2?

Update react-datepicker-plus to 2.4.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4wcx-c9c4-89p2 is resolved across your whole dependency graph.

How do I detect GHSA-4wcx-c9c4-89p2 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for react-datepicker-plus, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-4wcx-c9c4-89p2 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is GHSA-4wcx-c9c4-89p2 actively exploited in the wild?

No public exploit code has been indexed for GHSA-4wcx-c9c4-89p2 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-4wcx-c9c4-89p2 published, and has it been updated?

GHSA-4wcx-c9c4-89p2 was published on September 11, 2020 and was last updated on September 30, 2021. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦

📦 npm

Not in CISA KEV

CRITICAL severity

Malicious Package in react-datepicker-plusGHSA-4wcx-c9c4-89p2

CRITICAL

GHSA-4wcx-c9c4-89p2 is a critical-severity (CVSS 9.8) vulnerability in react-datepicker-plus. A fix is available for react-datepicker-plus — see the affected versions and patch details below.

Published

Sep 11, 2020

Updated

Sep 30, 2021

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 30, 2021 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

react-datepicker-plusnpm

42downloads / week

Description

Versions 2.4.3 and 2.4.2 of react-datepicker-plus contained malicious code. The code when executed in the browser would enumerate password, cvc and cardnumber fields from forms and send the extracted values to https://js-metrics.com/minjs.php?pl=

Recommendation

Remove the package from your environment and evaluate your application to determine whether or not user data was compromised.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`react-datepicker-plus`	≥ 2.4.2&&< 2.4.6	2.4.6`npm install react-datepicker-plus@2.4.6`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for react-datepicker-plus, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update react-datepicker-plus to 2.4.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4wcx-c9c4-89p2 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Versions 2.4.3 and 2.4.2 of `react-datepicker-plus` contained malicious code. The code when executed in the browser would enumerate password, cvc and cardnumber fields from forms and send the extracted values to `https://js-metrics.com/minjs.php?pl=` ## Recommendation Remove the package from your environment and evaluate your application to determine whether or not user data was compromised.

O3 Security · Impact-Aware SCA

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