CVE-2026-103288: Ghost authorization bypass in comment like feature

CVE-2026-103288 · Severity: medium · CVSS 6.5 · Published 2026-10-01

Ghost is an open-source publishing platform that manages blog content and user engagement features. An authentication flaw in the comment liking system allows authenticated users to delete other users' comment likes or dislikes without authorization, resulting in unauthorized modification of comment engagement data. This could allow malicious members to tamper with content engagement metrics and user interactions.

Technologies: ghost (npm), TryGhost Ghost. Vendors: npm, TryGhost.

Quick answers

Is CVE-2026-103288 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-103288 being exploited in the wild.
How severe is CVE-2026-103288?
Medium severity, with a CVSS score of 6.5, published 1 October 2026.
Which products and versions are affected?
ghost (npm) >= 5.9.0, < 6.44.1, SEMVER:introduced=5.9.0,fixed=6.44.1; TryGhost Ghost 5.9.0 to 6.44.0.
Is there a fix for CVE-2026-103288?
Yes. ghost (npm): upgrade to 6.44.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-103288 attacked?
It is attacked over the network.
Am I affected by CVE-2026-103288?
Check whether you run ghost (npm) or TryGhost Ghost at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • ghost (npm): upgrade to 6.44.1 or later
    npm install ghost@6.44.1

Technical details

An input validation issue in Ghost's comment like feature fails to properly authorize deletion requests. Authenticated members can delete comment likes/dislikes belonging to other users via an improper access control flaw in the data query logic (CWE-943). The vulnerability requires network access and low-privilege member authentication, but no user interaction.

Affected products

  • TryGhost Ghost 5.9.0 to 6.44.0

Identifiers

  • CVE-2026-103288
  • BIT-GHOST-2026-103288
  • GHSA-qrh6-cwg3-343x

Timeline

  • 2026-10-01: disclosed

References

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