PT-2026-52074 · Npm · @Tryghost/Activitypub

CVE-2026-53950

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Published

2026-06-24

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Updated

2026-08-04

CVSS v3.1

7.5

High

VectorAV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions @tryghost/activitypub versions prior to 3.1.0
Description The ActivityPub client in Ghost is susceptible to JavaScript injection. This occurs when the client processes posts shared by a maliciously customized ActivityPub server, allowing the execution of arbitrary scripts.
Recommendations Update @tryghost/activitypub to version 3.1.0.

Exploit

Fix

XSS

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Weakness Enumeration

CWE-79

Related Identifiers

BIT-GHOST-2026-53950
CVE-2026-53950
GHSA-XPP7-93X6-V29M

Affected Products

@Tryghost/Activitypub