CVE-2026-42018: JFrog Artifactory Improper Authentication Vulnerability

Required action (CISA's text)

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.

Description (NVD)

JFrog Artifactory contains an improper authentication vulnerability that could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

SOURCES

• CISA KEVCISA Known Exploited Vulnerabilities catalog

Other JFrog flaws

• CVE-2026-42016: JFrog Artifactory Incorrect Authorization Vulnerability
• CVE-2026-82329: JFrog Artifactory Improper Authentication Vulnerability
• CVE-2026-66384: JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.