CVE-2021-23520: The package juce-framework/juce before 6.1.5 are vulnerable to Arbitrary File Write via Archive Extraction (Zi

Q: How do I fix CVE-2021-23520?

juce: upgrade to 6.1.5. Exact commands for each OS are on this page.

Q: Is CVE-2021-23520 being exploited?

CVE-2021-23520 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-2021-23520 affect?

CVE-2021-23520 affects juce. Severity is medium (CVSS 5.5). The package juce-framework/juce before 6.1.5 are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) via the ZipFile::uncompressEntry function in juce_ZipFile.cpp. This vulnerability is triggered when the archive is extract

Q: How urgent is CVE-2021-23520?

Priority 41/100. Public exploit reference

This month

MEDIUM 5.5UPGRADE

CVE-2021-23520 is a medium-severity flaw (CVSS 5.5) affecting juce. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The package juce-framework/juce before 6.1.5 are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) via the ZipFile::uncompressEntry function in juce_ZipFile.cpp. This vulnerability is triggered when the archive is extracted upon calling uncompressTo() on a ZipFile object.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-22
Published	2022-01-31
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: juce

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

Am I affected?

Timeline

2022-01-31 11:15 UTCPublished CVE record published
2026-06-17 03:38 UTCUpdated Record last modified

juce juce UPGRADE

Affected: < 6.1.5

Fixed in: 6.1.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 6.1.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade juce

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-2021-23520?

juce: upgrade to 6.1.5. Exact commands for each OS are on this page.

Is CVE-2021-23520 being exploited?

CVE-2021-23520 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-2021-23520 affect?

CVE-2021-23520 affects juce. Severity is medium (CVSS 5.5). The package juce-framework/juce before 6.1.5 are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) via the ZipFile::uncompressEntry function in juce_ZipFile.cpp. This vulnerability is triggered when the archive is extract

How urgent is CVE-2021-23520?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2021-23521 MEDIUM 5.5 UPGRADE This affects the package juce-framework/JUCE before 6.1.5

References

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