Risk Letters

Exploited vulnerability

CVE-2026-42018

TLP:CLEAR

JFrog Artifactory Improper Authentication Vulnerability

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.

Facts

  • Vendor: JFrog
  • Product: Artifactory
  • CVSS: 7.5
  • EPSS (probability of exploitation within 30 days): 9.8 %
  • On CISA's Known Exploited Vulnerabilities list since: 11 September 2026
  • First known exploitation: 11 September 2026
  • CISA's deadline for US federal agencies: 25 September 2026
  • Weakness: CWE-287
  • First seen by Risk Letters: 11 September 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD