Ghost vulnerable to information disclosure of private API fields

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2023-31133: 45.71% estimated exploitation activity in the next 30 days; percentile 98.80 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact 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. We 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. Immediate action should be taken to secure your site - see patches and workarounds below. Patches v5.46.1 contains a fix for this issue. Workarounds Add a block for requests to /ghost/api/content/ where the filter query parameter contains password or email. For more information If you have any questions or comments about this advisory: Email us at security@ghost.org

Published by the source

3 May 2023, 21:57 UTC

Last modified by the source

10 Sep 2026, 03:50 UTC

Source last checked

26 Oct 2026, 12:27 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-r97q-ghch-82j9

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-r97q-ghch-82j9

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# Patch Next advisory brief: CVE-2023-31133

Advisory: Ghost vulnerable to information disclosure of private API fields
IDs: CVE-2023-31133, GHSA-r97q-ghch-82j9
Record: https://patchnext.com/advisories/cve-2023-31133 (revision 2, source checked 26 Oct 2026, 12:27 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: ghost 5.46.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm ghost: affected < 5.46.1; fixed in 5.46.1

## Suggested inspection (read-only)
- `npm ls ghost --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on ghost.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-r97q-ghch-82j9 (OSV record GHSA-r97q-ghch-82j9 lists affected ranges: npm ghost >=0 <5.46.1 (fixed))
- Verified: https://github.com/advisories/GHSA-r97q-ghch-82j9 (GitHub-reviewed advisory GHSA-r97q-ghch-82j9 lists affected ranges: npm ghost >=0 <5.46.1)

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