CVE-2026-70589: Ghost: Archived Offers can be Redeemed

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-04 · updated 2026-10-24
Weakness: CWE-20

Description

Ghost is a Node.js content management system. From 4.22.0 until 6.54.1, a missing validation check allowed users to redeem subscription offers that were no longer active. This issue is fixed in version 6.54.1.

Affected products

TryGhost Ghost: from 4.22.0, < 6.54.1

References

https://github.com/TryGhost/Ghost/commit/d91c0fc52dfc987d71a9803dbcbe6447d21b92fb
https://github.com/TryGhost/Ghost/security/advisories/GHSA-4wx2-7gvj-qfq3

Get alerted when CVE-2026-70589 or the next vulnerability affects your stack