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

2023-05-0820:56:39

CWE-200

GitHub_M

www.cve.org

ghost

api

vulnerability

disclosure

private fields

version 5.46.1

validation

filtering

brute force attack

patch

exploitation

self-hosters

workaround

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

51.2%

JSON

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.

CNA Affected

[
  {
    "vendor": "TryGhost",
    "product": "Ghost",
    "versions": [
      {
        "version": "< 5.46.1",
        "status": "affected"
      }
    ]
  }
]