CVE-2026-66384
JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability
JFrog Artifactory
An authenticated user may write data outside the intended Docker cache path under specific remote-repository conditions.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 27 August 2026. US federal agencies were required to remediate it by 10 September 2026.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 0.6%, which is higher than 46.4% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Frequently asked questions
Is CVE-2026-66384 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2026-66384.
What does CVE-2026-66384 affect?
CVE-2026-66384 affects JFrog Artifactory. An authenticated user may write data outside the intended Docker cache path under specific remote-repository conditions.
How severe is CVE-2026-66384?
CVE-2026-66384 is rated MEDIUM with a CVSS base score of 5.3. EPSS puts the probability of exploitation in the next 30 days at 0.6%, higher than 46.4% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 10 September 2026.
How should organisations respond to CVE-2026-66384?
Apply the vendor patch for JFrog Artifactory as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.