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Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comment Like

Priority LOW 31CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00203 10th percentileScored 2026-11-07
Fix Fixed Ghost (TryGhost): 6.44.1ghost (npm): 6.44.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TryGhostGhost5.9.0 to before 6.44.16.44.1Patch availableCNA
—ghost (npm)5.9.0 to before 6.44.16.44.1Patch availableGHSA-qrh6-cwg3-343x
  • Ghost VendorTryGhost Affected 5.9.0 to before 6.44.1 Fixed in 6.44.1 Patch available CNA
  • ghost (npm) Vendor— Affected 5.9.0 to before 6.44.1 Fixed in 6.44.1 Patch available GHSA-qrh6-cwg3-343x

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:ghost:ghost:*:*:*:*:*:*:*:*——TryGhost
  • cpe:2.3:a:ghost:ghost:*:*:*:*:*:*:*:* Versions — — ·TryGhost

Remediation

  • Fix · CNA Ghost (TryGhost) Fixed in 6.44.1
  • Fix · GHSA-qrh6-cwg3-343x ghost (npm) Fixed in 6.44.1 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    TryGhost Ghost 6.44.1

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-65664 Ghost 5.9.0 before 6.44.1 Authorization Bypass via CommentsPriority LOW 31

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-103288
  2. 2026-10-03 Alias added: GHSA-wj4w-mc24-pcfm
  3. 2026-10-27 Alias added: GHSA-qrh6-cwg3-343x

References

  • TI-2026-21459 Ghost has a SQL Injection in its Content API CVSS 3.1CRITICAL 9.4
  • TI-2022-10277 An arbitrary file upload vulnerability in the file upload module of Ghost v4.39.0 allows… CVSS 3.1CRITICAL 9.8
  • TI-2024-22785 Ghost through 5.85.1 allows remote attackers to bypass an authentication rate-limit… CVSS 3.1CRITICAL 9.1
  • TI-2023-14843 Ghost vulnerable to disclosure of private API fields CVSS 3.1HIGH 7.5
  • TI-2025-09049 Ghost 6.0.6 - SSRF via oEmbed Bookmark CVSS 4.0MEDIUM 6.1
  • TI-2023-20918 Arbitrary file read via symlinks in Ghost CVSS 3.1MEDIUM 6.5
See all 109 →

Sources