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TI-2026-66055 Aliases CVE-2026-104412GHSA-g74c-47mq-8gfq

Ghost 0.5.0 before 6.64.0 Privilege Escalation via Staff Role Assignment

Priority LOW 23CWE-269Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

Ghost 0.5.0 before 6.64.0 does not correctly restrict staff role assignment, allowing users with the Editor or Super Editor role to assign their own role to other staff despite lacking permission to do so. An authenticated Editor or Super Editor can promote Author and Contributor users to Editor or Super Editor.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00192 8th percentileScored 2026-11-07
Fix Fixed Ghost (TryGhost): 6.64.0

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
TryGhostGhost0.5.0 to before 6.64.06.64.0Patch availableCNA
  • Ghost VendorTryGhost Affected 0.5.0 to before 6.64.0 Fixed in 6.64.0 Patch available CNA

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 6.64.0

Fixed in the same release

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

  • Release ·

    TryGhost Ghost 6.64.0

    8 records Highest priority Priority MEDIUM 1 MEDIUM, 7 LOW

    Other records, highest priority first

    • TI-2026-66061 Ghost from 6.10.3 before 6.64.0 RCE via Theme Translation FilesPriority MEDIUM 40
    • TI-2026-66057 Ghost from 2.5.0 before 6.64.0 Stored XSS via oEmbed Photo ResponsesPriority LOW 39
    • TI-2026-66056 Ghost 5.94.0 before 6.64.0 Stored XSS via Bookmark Card ImagesPriority LOW 38
    Show all 8 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-104412
  2. 2026-10-03 Alias added: GHSA-g74c-47mq-8gfq
  3. 2026-10-06 CISA SSVC decision points changed

References

Advisory 1

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences