Ghost is a Node.js content management system. From 6.27.0 before 6.44.0, Ghost's public donation checkout flow allowed an unauthenticated attacker to control donation checkout metadata and obtain full paid gift memberships for a minimal payment without exposing customer or member data or stealing money from a site or its members. This issue is fixed in version 6.44.0.
CVE-2026-59817
This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 83% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EPSS
- 17.0%
- KEV
- Not listed
Published
July 9, 2026
Last Modified
July 10, 2026
Advisory Details (5)
Auto-updated Jul 10, 2026Paid gift memberships obtainable at minimal cost via the donations feature · Advisory · TryGhost/Ghost · GitHub
https://github.com/TryGhost/Ghost/security/advisories/GHSA-xm43-3m56-w3wfUpdated donation checkout metadata handling
Patch available: TryGhost/Ghost v6.44.0 (PR #28352 merged 2026-06-03)
https://github.com/TryGhost/Ghost/pull/28352Updated donation checkout request handling
Patch available: TryGhost/Ghost v6.44.0 (PR #28351 merged 2026-06-03)
https://github.com/TryGhost/Ghost/pull/28351commit ee7b991b466a (TryGhost/Ghost)
Patch available: TryGhost/Ghost v6.44.0 (contains commit ee7b991b466a)
https://github.com/TryGhost/Ghost/commit/ee7b991b466a7849c70f9d1caed8e491ee4113c6commit cab716cd015a (TryGhost/Ghost)
Patch available: TryGhost/Ghost v6.44.0 (contains commit cab716cd015a)
https://github.com/TryGhost/Ghost/commit/cab716cd015ac04b7ee50c7a405478d97bc7b1e0Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 20:49 UTCEG score recompute
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-10 19:23 UTCEG score recompute
- 2026-07-09 17:57 UTCEG score recompute
- 2026-07-09 17:56 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-59817?
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How do I remediate CVE-2026-59817?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-59817
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