CVE-2026-66384 JFrog Artifactory: file path flaw
In plain words: The program can be tricked into reading or writing files outside the folder it should stay in. Leaks files such as passwords and settings, or overwrites important ones.
Confirmed exploited by CISA on · US federal patch deadline Sep 10, 2026
What to do
- Install JFrog's security update for Artifactory. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability
- Product
- JFrog Artifactory
- CISA description
- JFrog Artifactory contains an improper limitation of a pathname to a restricted directory vulnerability. This can allow an authenticated user to write data outside the intended Docker cache path under specific remote-repository conditions.
- Type of flaw
- File path flaw (CWE-22)
- Confirmed exploited
- Aug 27, 2026
- US federal patch deadline
- Sep 10, 2026
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Answering about CVE-2026-66384 ·
Questions about CVE-2026-66384
Is CVE-2026-66384 being exploited?
Yes. CISA added CVE-2026-66384 to its Known Exploited Vulnerabilities catalog on Aug 27, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-66384?
Install JFrog's security update for Artifactory. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2026-66384?
Only if you use JFrog Artifactory. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.