CVE-2019-10745: assign-deep is vulnerable to Prototype Pollution in versions before 0.4.8 and version 1.0.0

This week

HIGH 7.5REMOTEUPGRADE

CVE-2019-10745 is a high-severity flaw (CVSS 7.5) affecting assign-deep. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

assign-deep is vulnerable to Prototype Pollution in versions before 0.4.8 and version 1.0.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using either a constructor or a _proto_ payload.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 33%)
CISA exploited list	No
Weakness	CWE-1321
Published	2019-08-20
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: assign-deep project

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

Am I affected?

Timeline

2019-08-20 19:15 UTCPublished CVE record published
2026-06-17 02:11 UTCUpdated Record last modified

assign-deep project assign-deep UPGRADE

Affected: < 0.4.8 · 1.0.0

Fixed in: 0.4.8

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls assign-deep

2. UPGRADE to 0.4.8

npm install assign-deep@">=0.4.8"

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-2019-10745?

assign-deep: upgrade to 0.4.8. Exact commands for each OS are on this page.

Is CVE-2019-10745 being exploited?

CVE-2019-10745 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-2019-10745 affect?

CVE-2019-10745 affects assign-deep. Severity is high (CVSS 7.5). assign-deep is vulnerable to Prototype Pollution in versions before 0.4.8 and version 1.0.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using either a constructor or a _proto_ payload.

How urgent is CVE-2019-10745?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-3720 HIGH 8.8 UPGRADE assign-deep node module before 0.4.7 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerabilit

References

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