JFrog security advisory (AV26-867) – Update 1

JFrog Artifactory contains an improper authentication flaw (CWE-287) that, under the product's default configuration, can let an unauthenticated attacker with network access obtain administrative privileges. The weakness is reachable over the network with no privileges or user interaction required, which is why it carries a critical 9.8 CVSS 3.1 score; an attacker who succeeds effectively gains full administrator control of the artifact repository, and public reporting describes attackers using the flaw to mint admin tokens days after disclosure. Any organization running JFrog Artifactory is in scope — CISA's entry lists the product without version detail, so deployments should verify their versions against JFrog's advisory (AV26-867, Update 1) — with internet-exposed instances at greatest risk. Exploitation is confirmed in the wild: CISA added the CVE to its Known Exploited Vulnerabilities Catalog on 2026-09-02, a public proof-of-concept is available, and news headlines report active exploitation alongside related Artifactory flaws CVE-2026-42016 and CVE-2026-42018.

Do: Upgrade Artifactory to a fixed release per JFrog's advisory AV26-867 (Update 1) — the exact affected and fixed versions are not specified in this data, so check the advisory before patching. Until patched, restrict network access to the Artifactory UI and APIs to trusted sources (VPN/firewall allowlists) and review the instance for unauthorized admin tokens or accounts, as in-the-wield attackers have been minting admin tokens. CISA KEV stakeholders must apply mitigations in line with BOD 26-04 within the required timeline or discontinue use of the product.