CVE-2026-42018 Scanner

JFrog Artifactory is a universal binary repository manager used by developers and DevOps teams for managing project dependencies and builds. It supports a wide range of package types including Maven, NuGet, and Docker, allowing teams to consolidate all of their artifact needs under one system. Often utilized in continuous integration and delivery pipelines, JFrog Artifactory is instrumental in ensuring that the right packages and versions are employed in different stages of development. This tool is widely adopted by organizations seeking to automate their development processes and improve productivity. The system provides features for access control, ensuring that only authorized users can view or modify certain artifacts.

The vulnerability that has been detected in JFrog Artifactory involves an information disclosure flaw due to an improperly managed anonymous access token. This issue arises when anonymous access is disabled, yet a trailing slash in the API endpoint can bypass this configuration, allowing unauthenticated attackers access to internal anonymous-user tokens. If exploited, this vulnerability can potentially lead to unauthorized access to sensitive resources, posing a risk to the confidentiality of the system's data. Such vulnerabilities typically emerge due to oversights in access control mechanisms, where endpoints do not consistently enforce the intended security policies across all usage scenarios. To guard against these issues, developers must ensure that their applications implement robust and consistent authorization checks throughout the application.

In terms of technical details, this vulnerability has been identified in the way that the JFrog Artifactory application processes requests to certain API endpoints, notably those suffixed with a trailing slash. When anonymous access is configured to be disallowed, a bug in the application logic allows unauthenticated users to request these endpoints and receive tokens meant only for anonymous users within the authenticated context. The vulnerability is triggered by an HTTP POST request to the endpoint '/access/api/v1/aws/token/' which mistakenly bypasses the anonymous access restriction, resulting in the disclosure of sensitive tokens. The condition is identified when the HTTP response status is 200 and the response body contains an "access_token" associated with "anonymous" users.

When exploited, this vulnerability can result in various adverse impacts. Unauthorized entities could gain access to sensitive resources by using the leaked anonymous tokens to impersonate anonymous users. This breach in security may further enable attackers to gather information residing within the application's database, which could be used for subsequent attacks or data exfiltration purposes. It not only jeopardizes confidential business information but can also lead to reputational damage and potential loss of trust among stakeholders. As attackers exploit this vulnerability, it could also set a precedent for exploiting similar issues in other applications with comparable configurations.

REFERENCES

• https://docs.jfrog.com/releases/docs/jfrog-security-advisories
• https://www.wiz.io/blog/artifactory-under-attack-in-the-wild-exploitation-of-cve-2026-42016-cve-2026-42018
• https://github.com/BL0odz/JFrog_CVE-2026-65615-ByGLM
• https://edrabb.fr/posts/full-chain-preauth-rce-jfrog-artifactory/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42018