@tryghost/activitypub: XSS in Ghost’s ActivityPub client_CVE-2026-53950

7.5 / 10

HIGH

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

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.

Basic Information

ID CVE-2026-53950

Source GitHub_M

Published Jun 24, 2026 at 18:04

Modified Jun 24, 2026 at 18:49

Affected Product

Vendor TryGhost

Product Ghost

Version < 3.1.0

Affected Versions TryGhost Ghost < 3.1.0

CWE Classification

CWE-79

References

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

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    "published": "2026-06-24T18:04:25.695Z",
    "modified": "2026-06-24T18:49:55.010Z",
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