CVE-2026-42018
JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive…
High
Known exploited
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 9.80%
- Chance of exploitation in the next 30 days. Higher than 95.55% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since Sep 11, 2026
- Weakness
- CWE-287 Improper Authentication
- Fix
- None yet
- No fixed version published
Exploited in the wild. JFrog Artifactory Improper Authentication Vulnerability (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. Due for U.S. federal agencies by Sep 25, 2026.
Description
JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.
How to fix
No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Weakness
CWE-287: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How to prevent it
- Architecture and Design: Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
References
Advisories
Other links
Timeline
- Published
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-f9x3-7vq9-cph6 Laravel TokenGuard authentication bypass through non-string API credentials | Critical | Same weakness, CWE-287 |
| GHSA-r4xp-prcw-77qf better-auth: OAuth Proxy lets an attacker sign in as another user | Critical | Same weakness, CWE-287 |
| GHSA-965c-763c-88jm better-auth: OAuth state can be used as a Magic Link to sign in as another user | Critical | Same weakness, CWE-287 |
| GO-2026-6773 Nginx UI: Casdoor SSO callback uses a constant `state` parameter (login CSRF) | High | Same weakness, CWE-287 |
| GO-2026-6786 Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent account takeover | High | Same weakness, CWE-287 |
| GHSA-xv7q-fvmc-jx96 Vikunja: OIDC email-fallback account linking ignores email_verified, enabling local-account takeover | High | Same weakness, CWE-287 |
| GHSA-68w4-83fh-f2w8 pyload-ng: getUserData/get_userdata exposed at Perms.ANY allow any authenticated account to brute-force the administrator password | High | Same weakness, CWE-287 |
| GHSA-r44w-v6gf-x3p6 pyLoad has an authentication bypass in API key validation (check_apikey cache) | High | Same weakness, CWE-287 |
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