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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).","state":0,"publishedAt":"2026-08-04T21:57:48+00:00","modifiedAt":"2026-08-04T22:00:24.104134+00:00","affected":[{"ecosystem":"npm","name":"ghost","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"6.27.0"},{"kind":"fixed","version":"6.44.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/TryGhost/Ghost/security/advisories/GHSA-xm43-3m56-w3wf","https://nvd.nist.gov/vuln/detail/CVE-2026-59817","https://github.com/TryGhost/Ghost/pull/28351","https://github.com/TryGhost/Ghost/pull/28352","https://github.com/TryGhost/Ghost/commit/cab716cd015ac04b7ee50c7a405478d97bc7b1e0","https://github.com/TryGhost/Ghost/commit/ee7b991b466a7849c70f9d1caed8e491ee4113c6","https://github.com/TryGhost/Ghost"],"sourceUrl":"https://github.com/advisories/GHSA-xm43-3m56-w3wf","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-xm43-3m56-w3wf","identifiers":["GHSA-xm43-3m56-w3wf","BIT-ghost-2026-59817","CVE-2026-59817"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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