Auth bypass in Jfrog Artifactory
CVE-2026-42018
JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.098 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.098 · change: +0.095
Affected products
- Jfrog Artifactory — versions 0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
References
- docs.jfrog.com/releases/docs/jfrog-security-advisories (vendor-advisory, Vendor Advisory)
- docs.jfrog.com/releases/docs/artifactory-self-managed-releases (vendor-advisory, Release Notes)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-42018?
- CVE-2026-42018 is a high-severity vulnerability in Jfrog Artifactory, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-08-12.
- How severe is CVE-2026-42018?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-42018 known to be exploited?
- Yes. CVE-2026-42018 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-09-11), indicating it is being actively exploited.