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Ghost 5.8.0 before 6.34.0 Staff Account Takeover via Admin iframe

Priority LOW 38CWE-23Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Ghost versions 5.8.0 before 6.34.0 contain an input validation vulnerability in the admin iframe that allows attackers to take over staff user accounts. Attackers with content publishing privileges can craft malicious pages that, when visited by active staff users, enable account takeover through improper input validation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00271 19th percentileScored 2026-11-07
Fix Fixed Ghost (TryGhost): 6.34.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
TryGhostGhost5.8.0 to before 6.34.06.34.0Patch availableCNA
  • Ghost VendorTryGhost Affected 5.8.0 to before 6.34.0 Fixed in 6.34.0 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 6.34.0

Fixed in the same release

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

  • Release ·

    TryGhost Ghost 6.34.0

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-65652 Ghost 2.5.0 before 6.34.0 Untrusted Script Execution via oEmbedPriority LOW 39
    • TI-2026-65654 Ghost 3.10.0 before 6.34.0 Session Invalidation BypassPriority LOW 34

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-103278
  2. 2026-10-03 Alias added: GHSA-72jh-g5rp-326j

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