CVE-2021-39192

Name: CVE-2021-39192
Creator: NVD / NIST
Published: 2021-09-03T15:15:09.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 0.99%

Last modified Jun 17, 2026

CVE-2021-39192 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Ghost is a Node.js content management system. An error in the implementation of the limits service between versions 4.0.0 and 4.9.4 allows all authenticated users (including contributors) to view admin-level API keys via the integrations API endpoint, leading to a privilege escalation vulnerability. EPSS estimates a 0.99% chance of exploitation in the next 30 days.

Description

Ghost is a Node.js content management system. An error in the implementation of the limits service between versions 4.0.0 and 4.9.4 allows all authenticated users (including contributors) to view admin-level API keys via the integrations API endpoint, leading to a privilege escalation vulnerability. This issue is patched in Ghost version 4.10.0. As a workaround, disable all non-Administrator accounts to prevent API access. It is highly recommended to regenerate all API keys after patching or applying the workaround.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.99%

57.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ghost	Ghost	>= 4.0.0, < 4.10.0

References

https://github.com/TryGhost/Ghost/releases/tag/v4.10.0Release Notes, Third Party Advisory
https://github.com/TryGhost/Ghost/security/advisories/GHSA-j5c2-hm46-wp5cThird Party Advisory
https://github.com/TryGhost/Ghost/releases/tag/v4.10.0Release Notes, Third Party Advisory
https://github.com/TryGhost/Ghost/security/advisories/GHSA-j5c2-hm46-wp5cThird Party Advisory

Timeline

Published: Sep 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39192?

How severe is CVE-2021-39192?

CVE-2021-39192 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39192?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39192?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST