CVE-2026-53950

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CVSS 3.1

7.5 high

EPSS

<1%p28

Published

Jun 24, 2026 (Jun 24, 2026)

Modified

Jun 25, 2026

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.

Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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