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CVE-2026-24778VulnerabilityPublished

CVE-2026-24778: TryGhost Ghost · Cross-site Scripting

Affects TryGhost GhostSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High · fixed in 6.15.0 : patch TryGhost Ghost soon.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.15.0, 5.12.5, 5.12.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade tryghost/Ghost to 6.15.0, 5.12.5 or 5.12.4.

Affected software

ProductAffectedFixed in
TryGhostGhostAffected
  • =@tryghost/portal >= 2.29.1, < 2.51.5
  • =@tryghost/portal >= 2.52.0, < 2.57.1
  • =ghost >= 5.43.0, < 5.121.0
  • =ghost >= 6.0.0, < 6.15.0
Fixed in–
GitHubtryghost/Ghostpkg:github/tryghost/GhostOther threatsAffected
  • <5.12.5
  • >=5.43.0 <5.12.4
  • <6.15.0 >=6.0.0
Fixed in
  • 5.12.5
  • 5.12.4
  • 6.15.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

1. Upgrade Ghost CMS to version 5.121.0 or later if using the 5.x branch, or to 6.15.0 or later if using the 6.x branch, as these versions include patched Portal components. 2. For installations using customized or self-hosted Portal versions, manually update or rebuild the Portal component to the latest patched version (Portal v2.51.5 or v2.57.1 respectively). 3. Review and restrict user permissions to minimize the impact of compromised accounts, ensuring least privilege principles are enforced for staff and members. 4. Implement Content Security Policy (CSP) headers to limit the execution of unauthorized scripts and reduce XSS impact. 5. Educate users and staff about phishing risks and suspicious links to reduce the likelihood of user interaction with malicious URLs. 6. Monitor web server and application logs for unusual activity, including unexpected JavaScript execution or anomalous user behavior. 7. Consider deploying web application firewalls (WAF) with rules to detect and block XSS payloads targeting Ghost CMS endpoints. 8. Regularly audit and sanitize user-generated content inputs and outputs to prevent injection of malicious code. 9. Maintain an incident response plan to quickly isolate and remediate compromised accounts or systems if exploitation is suspected.

Description

CVE-2026-24778 is a high-severity cross-site scripting (XSS) vulnerability in the TryGhost Ghost CMS and its Portal component. It affects Ghost versions 5.43.0 through 5.12.04 and 6.0.0 through 6.14.0, as well as Portal versions 2.

References

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