Exploited vulnerability · CISA KEV

Is CVE-2026-66384 exploited? Yes: in CISA KEV since 27 Aug 2026

Gociux · JFrog Artifactory · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-66384, JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 27 Aug 2026, 15 days after it was published. It affects JFrog Artifactory. If you run it, CISA's required action is: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

What it is

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.

What to do

1. Check whether you run it. Look for Artifactory in your asset inventory, including appliances and cloud images. Stack check lists every exploited JFrog CVE at once.
2. Apply the fix. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 12 Aug 2026.
4. Get told next time. Email alerts when CISA adds a CVE for JFrog.

Other exploited CVEs in Artifactory

• CVE-2026-42016: JFrog Artifactory Incorrect Authorization Vulnerability (11 Sep 2026)
• CVE-2026-42018: JFrog Artifactory Improper Authentication Vulnerability (11 Sep 2026)
• CVE-2026-82329: JFrog Artifactory Improper Authentication Vulnerability (2 Sep 2026)

References

• docs.jfrog.com/releases/docs/jfrog-security-advisories
• docs.jfrog.com/releases/docs/artifactory-self-managed-releases
• nvd.nist.gov/vuln/detail/CVE-2026-66384

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in August 2026 · JFrog scorecard · act-now radar.