CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
ActivityPub is a multi-tenant ActivityPub server for Ghost, built with Fedify. From 1.0.0 until 1.2.6, the `Undo` handler allows a remote federated server to cause the service to act on a `follow` or `repost` as though the activity came from a different account. This permits removal of an existing `follow` relationship or `repost` belonging to another account without that account's involvement. No private data is exposed and content is not modified; the affected relationships can be re-established. Services proxying to Ghost's hosted ActivityPub server have already been updated, while self-hosted services require an updated image and redeployment. This issue is fixed in version 1.2.6.
Засегнати продукти
- TryGhost ActivityPub: >= 1.0.0, < 1.2.6
Вид слабост
История
- 30 октомври 2026 Публикувано
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-63115
- https://nvd.nist.gov/vuln/detail/CVE-2026-63115
- https://github.com/TryGhost/ActivityPub/security/advisories/GHSA-mm4q-93gr-5mwc
- https://github.com/TryGhost/ActivityPub/pull/1929
- https://github.com/TryGhost/ActivityPub/commit/1526f540b983da97750b380868a210e6cdfb985e
- https://github.com/TryGhost/ActivityPub/releases/tag/v1.2.6