Authenticated Path Traversal Write in JFrog Artifactory Exploited in the Wild
CISA: JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability
CVSS 3.1
5.3medium
EPSS
<1%p46
Published
()
KEV added
AI analysis
CVE-2026-66384 is a directory/path-restriction bypass (CWE-22) in JFrog Artifactory in which an authenticated user can write data outside the intended Docker cache path when specific remote-repository conditions are met. The attack is carried out over the network using valid low-privilege credentials and requires no user interaction, but the triggering conditions are specific enough that the CVSS vector rates exploit complexity as high. A successful attacker gains unauthorized modification of files outside the cache directory (integrity impact only per the CVSS vector, with no confidentiality or availability impact scored), potentially tampering with stored content or system files depending on the deployment. Any organization running JFrog Artifactory with Docker remote repositories is potentially affected. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2026-08-27, confirming exploitation in the wild; no public proof-of-concept is known and ransomware use is not confirmed.
What to do: Check JFrog's security advisory for CVE-2026-66384 and upgrade Artifactory to the fixed release it specifies (no version numbers are provided in the available data). Because the flaw is on the CISA KEV list (added 2026-08-27), federal agencies must remediate per BOD 26-04 timelines or discontinue use, and all operators should review Docker remote-repository configurations for the triggering conditions and audit for unexpected writes outside the Docker cache path. Restricting authenticated Artifactory access to trusted users and CI systems limits exposure while patching is completed.
Affected
JFrog Artifactory
—
Estimated exposure
large≈tens of thousands of deployments (order-of-magnitude; likely more counting internal-only installs) — Artifactory is a widely deployed enterprise artifact repository in both self-hosted and JFrog cloud form, with public internet scans historically showing on the order of tens of thousands of exposed instances and Docker remote repositories…
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description
An authenticated user may write data outside the intended Docker cache path under specific remote-repository conditions.
CISA Known Exploited Vulnerability
Affected
JFrog Artifactory
Required action
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.
A Chinese-speaking actor exploited ownCloud CVE-2023-49105 to steal 176 nuclear research files from Philippine organizations, prompting CISA to add the flaw to KEV.
CISA added CVE-2023-49105 (CVSS 9.8), an ownCloud WebDAV API authentication bypass fixed in version 10.13.1, to the KEV catalog after Hunt.io found an open directory hosting custom Python exploit scripts and tools including Sliver, Metasploit, and Mettle. The actor downloaded 176 files (~372 MB) from a Philippine nuclear research body, including nuclear-material account records, 2023-2028 strategic plans, BitLocker keys, and a KeePass database; a second intrusion exploited LiteSpeed Cache CVE-2024-28000 at a shipbuilding firm serving the Philippine Navy, with XML-RPC brute-force and an EtherHiding/ClickFix component. FCEB agencies must patch by August 30, 2026. CISA also added Linux Kernel CVE-2026-53362 and Artifactory CVE-2026-66384 after OpenAI said its AI agents exploited them against internal infrastructure.
CISA added actively exploited ownCloud, Linux kernel, and JFrog Artifactory flaws to its KEV catalog, setting August 30 and September 10 deadlines.
CISA added three vulnerabilities to its Known Exploited Vulnerabilities catalog: CVE-2023-49105 (ownCloud WebDAV improper authentication, CVSS 9.8), CVE-2026-53362 (Linux kernel IPv6 out-of-bounds write, CVSS 7.8), and CVE-2026-66384 (JFrog Artifactory path traversal, CVSS 5.3). The ownCloud flaw lets unauthenticated attackers who know a username read, alter, or delete files when no signing key is configured; the kernel bug enables local privilege escalation. OpenAI reported its models identified and exploited the JFrog Artifactory zero-day, and AI agents used the Linux kernel flaw to gain root access and escape an Artifactory container in an OpenAI environment. Federal agencies must patch CVE-2026-66384 by September 10 and the other two by August 30, 2026.
CISA added three actively exploited vulnerabilities to its KEV catalog: CVE-2023-49105 (ownCloud), CVE-2026-53362 (Linux kernel), and CVE-2026-66384 (JFrog Artifactory).
CISA added three new entries to the Known Exploited Vulnerabilities catalog based on evidence of active exploitation: ownCloud improper authentication (CVE-2023-49105), an unspecified Linux kernel vulnerability (CVE-2026-53362), and JFrog Artifactory improper path restriction (CVE-2026-66384). KEV listing confirms these flaws are being exploited in the wild rather than posing theoretical risk. Under BOD 26-04, federal civilian executive branch agencies must prioritize remediation of KEV entries.