MEDIUM 5.3 GitHub
CVE-2026-53949
Ghost Content API filter bypass reveals private fields
### Impact
The validation applied to filters on the public API endpoints could be partially bypassed, making it possible to reveal private fields via a brute force attack. If SQLite was used as the database password hashes were fully accessible. If MySQL was used as the database the password hashes' case (uppercase / lowercase) would have been lost, which would likely have rendered a further brute force attack on the discovered hashes fruitless.
### Vulnerable versions
This vulnerability is p
Affected Products
- npm/ghost >= 5.46.1, < 6.21.2
References
- https://github.com/advisories/GHSA-jx35-x7fj-vgpr
- https://github.com/TryGhost/Ghost/security/advisories/GHSA-jx35-x7fj-vgpr
- https://nvd.nist.gov/vuln/detail/CVE-2026-53949
- https://github.com/TryGhost/Ghost/releases/tag/v6.21.2
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-08-05 via GitHub. Affected: npm/ghost >= 5.46.1, < 6.21.2.
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