{"id":"CVE-2026-59817","aliases":["GHSA-xm43-3m56-w3wf"],"title":"Ghost: Paid gift memberships obtainable at minimal cost via the donations feature","summary":"Ghost: Paid gift memberships obtainable at minimal cost via the donations feature","severity":"medium","cvss":5.3,"cwe":["CWE-472","CWE-639"],"vendor":"ghost","product":"ghost","ecosystem":"npm","affected":["ghost >= 6.27.0, < 6.44.0"],"patched":["ghost 6.44.0"],"published":"2026-08-04","updated":"2026-08-04","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-xm43-3m56-w3wf","references":[{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-xm43-3m56-w3wf"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59817"},{"url":"https://github.com/TryGhost/Ghost/pull/28351"},{"url":"https://github.com/TryGhost/Ghost/pull/28352"},{"url":"https://github.com/TryGhost/Ghost/commit/cab716cd015ac04b7ee50c7a405478d97bc7b1e0"},{"url":"https://github.com/TryGhost/Ghost/commit/ee7b991b466a7849c70f9d1caed8e491ee4113c6"},{"url":"https://github.com/advisories/GHSA-xm43-3m56-w3wf"}],"tags":["ghsa","npm"],"epss":0.00403,"epssPercentile":0.34236,"ingestedAt":"2026-08-04T22:42:37.853Z","slug":"CVE-2026-59817","body":"## Overview\n\n### Impact\n\nA vulnerability in Ghost's public donation checkout flow allowed an unauthenticated attacker to obtain full paid gift memberships for a minimal payment. No customer or member data was exposed, and the issue could not be used to steal money from a site or its members.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from [v6.27.0](https://github.com/TryGhost/Ghost/releases/tag/v6.27.0) up to [v6.43.1](https://github.com/TryGhost/Ghost/releases/tag/v6.43.1).\n\n### Patches\n\n[v6.44.0](https://github.com/TryGhost/Ghost/releases/tag/v6.44.0) contains a fix for this issue. \n\n### How to update\n\nFor self-hosters using Docker, find [Docker’s official Ghost image on Docker Hub](https://hub.docker.com/_/ghost) and follow the documentation on [updating a Docker-based Ghost instance](https://docs.ghost.org/install/docker#updating-ghost).\n\nFor self-hosters using Ghost-CLI, see the documentation for [updating Ghost to the latest version](https://docs.ghost.org/update).\n\n### Workarounds\n\nIf upgrading immediately is not possible, you can remove the vulnerable checkout path by disabling the donations feature in Ghost Admin under Settings → Membership → Tips & donations until the upgrade is applied.\n\n### References\n\nGhost thanks sane100400 and [p4p3r](https://hackerone.com/p4p3r_hak) for disclosing this vulnerability responsibly.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email Ghost at [security@ghost.org](mailto:security@ghost.org).\n\n## Affected packages\n\n- `ghost >= 6.27.0, < 6.44.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `ghost 6.44.0`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}