CVE-2021-26275: The eslint-fixer package through 0.1.5 for Node.js allows command injection via shell metacharacters to the fi

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CRITICAL 9.8REMOTEUPGRADE

CVE-2021-26275 is a critical-severity flaw (CVSS 9.8) affecting eslint-fixer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The eslint-fixer package through 0.1.5 for Node.js allows command injection via shell metacharacters to the fix function. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. The ozum/eslint-fixer GitHub repository has been intentionally deleted

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.0% (top 13%)
CISA exploited list	No
Weakness	CWE-77
Published	2021-03-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: eslint-fixer project

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

Am I affected?

Timeline

2021-03-19 00:15 UTCPublished CVE record published
2026-06-17 03:43 UTCUpdated Record last modified

eslint-fixer project eslint-fixer UPGRADE

Affected: <= 0.1.5

Fixed in: newer than 0.1.5

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls eslint-fixer

2. UPGRADE to newer than 0.1.5

npm install eslint-fixer@">0.1.5"

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-2021-26275?

eslint-fixer: upgrade to newer than 0.1.5. Exact commands for each OS are on this page.

Is CVE-2021-26275 being exploited?

CVE-2021-26275 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-2021-26275 affect?

CVE-2021-26275 affects eslint-fixer. Severity is critical (CVSS 9.8). The eslint-fixer package through 0.1.5 for Node.js allows command injection via shell metacharacters to the fix function. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. The ozum/eslint-fixer G

How urgent is CVE-2021-26275?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities · GitHub vulnerabilities

References

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