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Known Exploited Vulnerability
7.5
HIGH CVSS 3.1
CVE-2026-42018
JFrog Artifactory Improper Authentication Vulnerability - [Actively Exploited]
Overview
Description

JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

Details
INFO

Published Date :

Aug. 12, 2026, 6:17 p.m.

Last Modified :

Oct. 1, 2026, 7:17 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

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.

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 Campaign Use:

Unknown

Notes :

https://docs.jfrog.com/releases/docs/jfrog-security-advisories ; https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-42018

Impact
Affected Products

The following products are affected by CVE-2026-42018 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Jfrog artifactory
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 HIGH 48a46f29-ae42-4e1d-90dd-c1676c1e5e6d
CVSS 3.1 HIGH [email protected]
CVSS 3.1 HIGH MITRE-CVE
Solution
Fix authentication bypass by ensuring unauthenticated callers cannot access internal tokens.
  • Verify anonymous access settings.
  • Update JFrog Artifactory to patch the issue.
  • Restrict access to internal tokens.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-42018.

URL Resource
https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases Release Notes
https://docs.jfrog.com/releases/docs/jfrog-security-advisories Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42018 US Government Resource
https://www.wiz.io/blog/artifactory-under-attack-in-the-wild-exploitation-of-cve-2026-42016-cve-2026-4201 Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-42018 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-42018 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-42018 vulnerability anywhere in the article.

  • The Hacker News
CISA Adds 5 Actively Exploited Artifactory, ScreenConnect, and RouterOS Flaws to KEV

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added five security flaws impacting JFrog Artifactory, ConnectWise ScreenConnect, and MikroTik RouterOS to its Known Exploited Vuln ... Read more

Published Date: Sep 12, 2026 (3 weeks, 4 days ago)
  • TheCyberThrone
CISA adds Six Vulnerabilities in Two Days

CISA added six vulnerabilities to the Known Exploited Vulnerabilities (KEV) Catalog across September 10 and 11, 2026.The additions affect MikroTik RouterOS, ConnectWise ScreenConnect, GitLab, and JFro ... Read more

Published Date: Sep 12, 2026 (3 weeks, 4 days ago)
  • The Hacker News
Attackers Chain JFrog Artifactory Flaws to Gain Admin Control and Plant Backdoors

Attackers have chained two flaws in JFrog Artifactory, the repository that software build pipelines pull from, to take administrator control of self-hosted servers and plant backdoors, cloud security ... Read more

Published Date: Sep 11, 2026 (3 weeks, 6 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-42018 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 01, 2026

    Action Type Old Value New Value
    Removed SSVC {'id': 'CVE-2026-42018', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-11T00:00:00+00:00'}
    Added SSVC {'id': 'CVE-2026-42018', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-01T18:06:12.895893Z'}
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 12, 2026

    Action Type Old Value New Value
    Changed SSVC {'id': 'CVE-2026-42018', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-13T15:05:05.752699Z'} {'id': 'CVE-2026-42018', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-11T00:00:00+00:00'}
  • Modified Analysis by [email protected]

    Sep. 11, 2026

    Action Type Old Value New Value
    Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42018 Types: US Government Resource
    Added Reference Type CISA-ADP: https://www.wiz.io/blog/artifactory-under-attack-in-the-wild-exploitation-of-cve-2026-42016-cve-2026-4201 Types: Third Party Advisory
  • CVE Modified by [email protected]

    Sep. 11, 2026

    Action Type Old Value New Value
    Added Reference https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases
    Added Reference https://docs.jfrog.com/releases/docs/jfrog-security-advisories
    Removed Reference https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases
    Removed Reference https://docs.jfrog.com/releases/docs/jfrog-security-advisories
    Removed Reference Type https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases Types: Release Notes
    Removed Reference Type https://docs.jfrog.com/releases/docs/jfrog-security-advisories Types: Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 11, 2026

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42018
    Added Reference https://www.wiz.io/blog/artifactory-under-attack-in-the-wild-exploitation-of-cve-2026-42016-cve-2026-4201
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Sep. 11, 2026

    Action Type Old Value New Value
    Added Date Added 2026-09-11
    Added Due Date 2026-09-11
    Added Required Action 2026-09-11
    Added Vulnerability Name 2026-09-11
  • Reanalysis by [email protected]

    Sep. 11, 2026

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.117.0 up to (excluding) 7.117.27 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.125.0 up to (excluding) 7.125.19 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.133.0 up to (excluding) 7.133.28 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.146.0 up to (excluding) 7.146.8 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions up to (excluding) 7.111.20 OR *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:-:*:* versions from (including) 7.146.0 up to (excluding) 7.146.8 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:-:*:* versions up to (excluding) 7.111.20 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:-:*:* versions from (including) 7.117.0 up to (excluding) 7.117.27 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:-:*:* versions from (including) 7.125.0 up to (excluding) 7.125.19 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:-:*:* versions from (including) 7.133.0 up to (excluding) 7.133.28
  • Initial Analysis by [email protected]

    Sep. 11, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.117.0 up to (excluding) 7.117.27 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.125.0 up to (excluding) 7.125.19 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.133.0 up to (excluding) 7.133.28 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions from (including) 7.146.0 up to (excluding) 7.146.8 *cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:* versions up to (excluding) 7.111.20
    Added Reference Type JFrog: https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases Types: Release Notes
    Added Reference Type JFrog: https://docs.jfrog.com/releases/docs/jfrog-security-advisories Types: Vendor Advisory
  • CVE Modified by [email protected]

    Aug. 18, 2026

    Action Type Old Value New Value
    Changed Affected [{'vendor': 'jfrog', 'product': 'artifactory', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '7.146.8', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] [{'vendor': 'jfrog', 'product': 'artifactory', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '7.111.20', 'versionType': 'custom'}, {'status': 'affected', 'version': '7.117.0', 'lessThan': '7.117.27', 'versionType': 'custom'}, {'status': 'affected', 'version': '7.125.0', 'lessThan': '7.125.19', 'versionType': 'custom'}, {'status': 'affected', 'version': '7.133.0', 'lessThan': '7.133.28', 'versionType': 'custom'}, {'status': 'affected', 'version': '7.146.0', 'lessThan': '7.146.8', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}]
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Aug. 13, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-42018', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-13T15:05:05.752699Z'}
  • New CVE Received by [email protected]

    Aug. 12, 2026

    Action Type Old Value New Value
    Added Affected [{'vendor': 'jfrog', 'product': 'artifactory', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '7.146.8', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}]
    Added Description JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Added CWE CWE-287
    Added Reference https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases
    Added Reference https://docs.jfrog.com/releases/docs/jfrog-security-advisories
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact