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

What is CVE-2023-31133?

CVE-2023-31133 is a high-severity vulnerability in TryGhost Ghost, published on 8 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

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`.

Weakness: CWE-200

Which versions are affected by CVE-2023-31133?

3 open source packages ship an affected version, including ghost. It affects 1 product.

Products include Ghost Ghost.

How do I fix CVE-2023-31133?

Upgrade ghost to 5.46.1 or later.

Is CVE-2023-31133 being exploited?

There is no known exploitation of CVE-2023-31133 in the wild and no public exploit code.

Other vulnerabilities in TryGhost Ghost

• CVE-2022-27139 Arbitrary file upload in Ghost Critical 9.8
• CVE-2022-28397 Arbitrary file upload in Ghost Critical 9.8
• CVE-2022-41654 ghost vulnerable to unauthorized newsletter modification via improper access controls Critical 9.6
• CVE-2026-26980 Ghost has a SQL Injection in its Content API Critical 9.4
• CVE-2024-34451 Security feature bypass in n/a Critical 9.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-ghost-2023-31133, GHSA-r97q-ghch-82j9.