CVE-2021-23328: This affects all versions of package iniparserjs

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MEDIUM 5.6REMOTEMITIGATE

CVE-2021-23328 is a medium-severity flaw (CVSS 5.6) affecting iniparserjs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This affects all versions of package iniparserjs. This vulnerability relates when ini_parser.js is concentrating arrays. Depending on if user input is provided, an attacker can overwrite and pollute the object prototype of a program.

Why this priority

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

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.6 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Published	2021-01-29
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: iniparserjs project

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

Am I affected?

Timeline

2021-01-29 17:15 UTCPublished CVE record published
2026-06-17 03:38 UTCUpdated Record last modified

iniparserjs project iniparserjs MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls iniparserjs

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2021-23328?

iniparserjs: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-23328 being exploited?

CVE-2021-23328 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-2021-23328 affect?

CVE-2021-23328 affects iniparserjs. Severity is medium (CVSS 5.6). This affects all versions of package iniparserjs. This vulnerability relates when ini_parser.js is concentrating arrays. Depending on if user input is provided, an attacker can overwrite and pollute the object prototype of a program.

How urgent is CVE-2021-23328?

Priority 45/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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