Vulnerability · Published May 8, 2023 · Assigned by GitHub_M

CVE-2023-31133Ghost vulnerable to disclosure of private API fields

High 7.5

In plain English

A high-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 45.7% (higher than 99% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)45.7%top 1.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Ghost is an app for new-media creators with tools to build a website, publish content, send newsletters, and offer paid subscriptions to members. Prior to version 5.46.1, due to a lack of validation when filtering on the public API endpoints, it is possible to reveal private fields via a brute force attack. Ghost(Pro) has already been patched. Maintainers can find no evidence that the issue was exploited on Ghost(Pro) prior to the patch being added. Self-hosters are impacted if running Ghost a version below v5.46.1. v5.46.1 contains a fix for this issue. As a workaround, add a block for requests to `/ghost/api/content/*` where the `filter` query parameter contains `password` or `email`.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	5.46.1	GHSA-r97q-ghch-82j9

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	< 5.46.1

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

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-r97q-ghch-82j9 x_refsource_CONFIRM
https://github.com/TryGhost/Ghost/commit/b3caf16005289cc9909488391b4a26f3f4a66a90 x_refsource_MISC
https://github.com/TryGhost/Ghost/releases/tag/v5.46.1 x_refsource_MISC