Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Ghost versions from 5.9.0 up to 6.44.1 are affected by an authorization bypass in the comment like feature, caused by an input validation issue. A member with an account can delete comment likes or dislikes they are not authorized to remove. Upgrade Ghost to version 6.44.1 or later, which contains the fix; Docker and Ghost-CLI update instructions are linked in the source.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.1 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0020, the 10th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:33 UTC First seen by agentprime
- 31 Oct 2026, 13:33 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-qrh6-cwg3-343x
- OSV: GHSA-qrh6-cwg3-343x
- github.com/TryGhost/Ghost/security/advisories/GHSA-qrh6-cwg3-343x
- nvd.nist.gov/vuln/detail/CVE-2026-103288
- github.com/TryGhost/Ghost/pull/28297
- github.com/TryGhost/Ghost/commit/405c2623ff9060295d4a87d3a0eb4ef766c8d2d3
- github.com/TryGhost/Ghost
- github.com/TryGhost/Ghost/releases/tag/v6.44.1
- www.vulncheck.com/advisories/ghost-5.9.0-before-6.44.1-authorization-bypass-via-comment-like