CVE-2020-7643: paypal-adaptive through 0.4.2 manipulation of JavaScript objects resulting in Prototype Pollution

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MEDIUM 5.3REMOTEUPGRADE

CVE-2020-7643 is a medium-severity flaw (CVSS 5.3) affecting paypal-adaptive. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

paypal-adaptive through 0.4.2 manipulation of JavaScript objects resulting in Prototype Pollution. The PayPal function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-1321
Published	2020-04-23
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: idea

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

Am I affected?

Timeline

2020-04-23 15:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

idea paypal-adaptive UPGRADE

Affected: <= 0.4.2

Fixed in: newer than 0.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls paypal-adaptive

2. UPGRADE to newer than 0.4.2

npm install paypal-adaptive@">0.4.2"

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-2020-7643?

paypal-adaptive: upgrade to newer than 0.4.2. Exact commands for each OS are on this page.

Is CVE-2020-7643 being exploited?

CVE-2020-7643 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-2020-7643 affect?

CVE-2020-7643 affects paypal-adaptive. Severity is medium (CVSS 5.3). paypal-adaptive through 0.4.2 manipulation of JavaScript objects resulting in Prototype Pollution. The PayPal function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

How urgent is CVE-2020-7643?

Priority 44/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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