{"id":"CVE-2026-42018","aliases":["EUVD-2026-57388","GHSA-3q94-gprh-7pwm"],"status":"published","title":"Anonymous user token generation exposure in JFrog Artifactory","description":"JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.09983,"percentile":0.95635,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-08-12T17:43:21Z","modified":"2026-10-23T19:10:00Z","kev":{"date_added":"2026-09-11","due_date":"2026-09-25","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.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-09-11"},{"source":"kev","since":"2026-09-11"}],"exploits":[{"source":"nuclei","id":"CVE-2026-42018","title":"JFrog Artifactory - Anonymous Token Disclosure via Trailing Slash Auth Bypass","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-42018.yaml"}],"products":[{"vendor":"jfrog","product":"artifactory"}],"references":[{"url":"https://docs.jfrog.com/releases/docs/jfrog-security-advisories","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases","tags":["vendor-advisory","Release Notes"]},{"url":"https://www.wiz.io/blog/artifactory-under-attack-in-the-wild-exploitation-of-cve-2026-42016-cve-2026-4201","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42018","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42018"},{"url":"https://github.com/advisories/GHSA-3q94-gprh-7pwm"}],"sources":{"cve":[{"id":"CVE-2026-42018","title":"Anonymous user token generation exposure in JFrog Artifactory","description":"JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.","status":"published","published":"2026-08-12T17:43:21.289Z","modified":"2026-10-01T18:06:26.138Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-57388","description":"JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.","status":"published","published":"2026-08-12T17:43:21Z","modified":"2026-10-01T18:06:26Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"exploited_since":"2026-09-11","updated_at":"2026-11-02T17:27:44.322377Z"}],"ghsa":[{"id":"GHSA-3q94-gprh-7pwm","title":"JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when...","description":"JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.","status":"published","published":"2026-08-12T18:31:22Z","modified":"2026-09-11T21:32:08Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:11:45.662784Z"}],"kev":[{"id":"CVE-2026-42018","title":"JFrog Artifactory Improper Authentication Vulnerability","description":"JFrog Artifactory contains an improper authentication vulnerability that could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.","cwes":["CWE-287"],"kev":{"date_added":"2026-09-11","due_date":"2026-09-25","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.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2026-42018","description":"JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.","status":"published","published":"2026-08-12T18:17:29.473Z","modified":"2026-10-23T19:10:00.167Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:37.217486Z"}]}}