CVE-2026-29784: Ghost: Incomplete CSRF protections around OTC use

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-07 · updated 2026-06-17
Weakness: CWE-352

Description

Ghost is a Node.js content management system. From version 5.101.6 to 6.19.2, incomplete CSRF protections around /session/verify made it possible to use OTCs in login sessions different from the requesting session. In some scenarios this might have made it easier for phishers to take over a Ghost site. This issue has been patched in version 6.19.3.

Affected products

TryGhost Ghost: from 5.101.6 before 6.19.3 — fixed in 6.19.3

How to fix

Upgrade to a fixed version: TryGhost Ghost 6.19.3. Check the vendor advisory for mitigations.

References

https://github.com/TryGhost/Ghost/commit/ec065a774fa125953d2aa644a59cd8990329e0a0
https://github.com/TryGhost/Ghost/security/advisories/GHSA-9m84-wc28-w895

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