CVE-2026-53950

HIGH CVSS 7.5 View on NVD ↗

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.

CVSS Vector

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

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-xpp7-93x6-v29m

Published: Jun 24, 2026 19:17 UTC Modified: Jun 25, 2026 16:07 UTC