Vulnerability · Published Sep 3, 2021 · Assigned by GitHub_M

CVE-2021-39192Privilege escalation: all users can access Admin-level API keys

Medium 6.5

In plain English

A medium-severity information exposure in Ghost from TryGhost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)1.0%top 36.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	4.10.0	GHSA-j5c2-hm46-wp5c

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	>= 4.0.0, < 4.10.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-j5c2-hm46-wp5c x_refsource_CONFIRM
https://github.com/TryGhost/Ghost/releases/tag/v4.10.0 x_refsource_MISC