Ghost: Paid gift memberships obtainable at minimal cost via the donations feature

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Summary

CVECVE-2026-59817
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-09 18:16:57 UTC
Updated2026-07-10 19:14:18 UTC
DescriptionGhost 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.002570000 probability, percentile 0.170090000 (date 2026-07-10)

Problem Types: CWE-472 | CWE-639 | CWE-472 CWE-472: External Control of Assumed-Immutable Web Parameter | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TryGhost Ghost affected >= 6.27.0, < 6.44.0 Not specified

References

ReferenceSourceLinkTags
github.com/TryGhost/Ghost/commit/cab716cd015ac04b7ee50c7a405478d97bc7b1e0 [email protected] github.com
github.com/TryGhost/Ghost/security/advisories/GHSA-xm43-3m56-w3wf [email protected] github.com
github.com/TryGhost/Ghost/commit/ee7b991b466a7849c70f9d1caed8e491ee4113c6 [email protected] github.com
github.com/TryGhost/Ghost/pull/28351 [email protected] github.com
github.com/TryGhost/Ghost/pull/28352 [email protected] github.com
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