CVE-2026-56876: extract-zip does not validate symlink targets when extracting zip archives

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HIGH 8.1UPGRADE

CVE-2026-56876 is a high-severity flaw (CVSS 8.1) affecting extract-zip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validation, allowing it to point outside the extraction directory. Depending on how extract-zip is used, an attacker could read or write to arbitrary files.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-22, CWE-61
Published	2026-06-26
Last modified	2026-10-25

Publisher (CNA): Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government · Vendor: max-mapper

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-26 18:17 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

max-mapper extract-zip UPGRADE

Affected: <= 2.0.1

Fixed in: newer than 2.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls extract-zip

2. UPGRADE to newer than 2.0.1

npm install extract-zip@">2.0.1"

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-2026-56876?

extract-zip: upgrade to newer than 2.0.1. Exact commands for each OS are on this page.

Is CVE-2026-56876 being exploited?

CVE-2026-56876 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-2026-56876 affect?

CVE-2026-56876 affects extract-zip. Severity is high (CVSS 8.1). extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validatio

How urgent is CVE-2026-56876?

Priority 44/100. High severity; Public exploit reference

References

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