Ghost: Authorization Bypass in Comment Like Feature
The advisory, in context
Impact
An input validation issue allowed members to delete comment likes / dislikes that they were not authorized to delete.
Vulnerable versions
This vulnerability is present in Ghost from v5.9.0 up to v6.44.1.
Patches
v6.44.1 contains a fix for this issue.
How to update
For self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here.
If your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here.
References
Ghost thanks Adel Assakaf and Arthur Gurunlian as well as Geoffrey Diederichs of Escape for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email us at security@ghost.org.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
From 5.9.0 before 6.44.1
Fixed in 6.44.1
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "5.9.0"
},
{
"fixed": "6.44.1"
}
],
"type": "SEMVER"
}
],
"versions": []
}References
- https://github.com/TryGhost/Ghost/security/advisories/GHSA-qrh6-cwg3-343x
- https://nvd.nist.gov/vuln/detail/CVE-2026-103288
- https://github.com/TryGhost/Ghost/pull/28297
- https://github.com/TryGhost/Ghost/commit/405c2623ff9060295d4a87d3a0eb4ef766c8d2d3
- https://github.com/TryGhost/Ghost
- https://github.com/TryGhost/Ghost/releases/tag/v6.44.1
- https://www.vulncheck.com/advisories/ghost-5.9.0-before-6.44.1-authorization-bypass-via-comment-like