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Description

Ghost is a Node.js content management system. From 5.46.1 until 6.21.2, 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. This vulnerability is fixed in 6.21.2.

PUBLISHED Reserved 2026-06-11 | Published 2026-06-24 | Updated 2026-06-24 | Assigner GitHub_M




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CWE-693: Protection Mechanism Failure

Product status

>= 5.46.1, < 6.21.2
affected

References

github.com/.../Ghost/security/advisories/GHSA-jx35-x7fj-vgpr

cve.org (CVE-2026-53949)

nvd.nist.gov (CVE-2026-53949)

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