CVE-2020-15256: A prototype pollution vulnerability has been found in `object-path` <= 0.11.4 affecting the `set()` method

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HIGH 7.7REMOTEUPGRADE

CVE-2020-15256 is a high-severity flaw (CVSS 7.7) affecting object-path. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A prototype pollution vulnerability has been found in `object-path` <= 0.11.4 affecting the `set()` method. The vulnerability is limited to the `includeInheritedProps` mode (if version >= 0.11.0 is used), which has to be explicitly enabled by creating a new instance of `object-path` and setting the option `includeInheritedProps: true`, or by using the default `withInheritedProps` instance. The default operating mode is not affected by the vulnera

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Weakness	CWE-20, CWE-471
Published	2020-10-19
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: object-path project

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

Am I affected?

Timeline

2020-10-19 22:15 UTCPublished CVE record published
2026-06-17 02:56 UTCUpdated Record last modified

object-path project object-path UPGRADE

Affected: < 0.11.5

Fixed in: 0.11.5

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls object-path

2. UPGRADE to 0.11.5

npm install object-path@">=0.11.5"

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-2020-15256?

object-path: upgrade to 0.11.5. Exact commands for each OS are on this page.

Is CVE-2020-15256 being exploited?

CVE-2020-15256 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-2020-15256 affect?

CVE-2020-15256 affects object-path. Severity is high (CVSS 7.7). A prototype pollution vulnerability has been found in `object-path` <= 0.11.4 affecting the `set()` method. The vulnerability is limited to the `includeInheritedProps` mode (if version >= 0.11.0 is used), which has to be explicitly enabled

How urgent is CVE-2020-15256?

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

Related CVEs

CVE-2021-3805 HIGH 7.5 UPGRADE MITIGATE object-path is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pol
CVE-2021-23434 MEDIUM 5.6 UPGRADE MITIGATE This affects the package object-path before 0.11.6

References

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