Security Advisory

CVE-2026-53950

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-24 18:04:25

Last updated 2026-06-24 18:49:55

Assigner GitHub_M

CVSS score 7.5

State PUBLISHED

Description

@tryghost/activitypub is Ghost’s social/federation client app. Prior to 3.1.0, the ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server. This vulnerability is fixed in 3.1.0.

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