CVE-2026-42018
Improper Authentication in JFrog Artifactory. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 11 September 2026.
- Product
- JFrog Artifactory
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
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.
More from JFrog this year.
- CVE-2026-42016 Incorrect Authorization, added
- CVE-2026-82329 Improper Authentication, added
- CVE-2026-66384 Improper Limitation of a Pathname to a Restricted Directory, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.