Vulnerability · Published Oct 1, 2026 · Assigned by VulnCheck

CVE-2026-103288Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comment Like

Medium 6.5

In plain English

A medium-severity authorization bypass via user-controlled key in Ghost from TryGhost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 89.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Ghost, an open-source publishing platform, contains an input validation flaw in its comment like feature in versions from 5.9.0 before 6.44.1. An authenticated member can delete comment likes or dislikes belonging to other users that they are not authorized to delete, resulting in an authorization bypass and unauthorized modification of comment engagement data.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	6.44.1	GHSA-qrh6-cwg3-343x

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	5.9.0 – before 6.44.1

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

GitHub Security Advisory (GHSA-qrh6-cwg3-343x) vendor-advisory
VulnCheck Advisory: Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comment Like third-party-advisory