CVE-2020-36561: Due to improper path sanitization, archives containing relative file paths can cause files to be written (or o

Q: How do I fix CVE-2020-36561?

unzip: upgrade to 1.0.3-0.20200308084313-2adbaa4891b9. Exact commands for each OS are on this page.

Q: Is CVE-2020-36561 being exploited?

CVE-2020-36561 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-36561 affect?

CVE-2020-36561 affects unzip. Severity is critical (CVSS 9.1). Due to improper path sanitization, archives containing relative file paths can cause files to be written (or overwritten) outside of the target directory.

Q: How urgent is CVE-2020-36561?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.1REMOTEUPGRADE

CVE-2020-36561 is a critical-severity flaw (CVSS 9.1) affecting unzip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Due to improper path sanitization, archives containing relative file paths can cause files to be written (or overwritten) outside of the target directory.

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	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-22
Published	2022-12-27
Last modified	2026-06-17

Publisher (CNA): Go Project · Vendor: unzip project

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

Am I affected?

Timeline

2022-12-27 22:15 UTCPublished CVE record published
2026-06-17 03:15 UTCUpdated Record last modified

unzip project unzip UPGRADE

Affected: < 1.0.3-0.20200308084313-2adbaa4891b9

Fixed in: 1.0.3-0.20200308084313-2adbaa4891b9

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy unzip || rpm -q unzip || unzip --version

2. UPGRADE to 1.0.3-0.20200308084313-2adbaa4891b9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade unzip

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade unzip

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2020-36561?

unzip: upgrade to 1.0.3-0.20200308084313-2adbaa4891b9. Exact commands for each OS are on this page.

Is CVE-2020-36561 being exploited?

CVE-2020-36561 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-2020-36561 affect?

CVE-2020-36561 affects unzip. Severity is critical (CVSS 9.1). Due to improper path sanitization, archives containing relative file paths can cause files to be written (or overwritten) outside of the target directory.

How urgent is CVE-2020-36561?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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