Detections
Analytics

SCA: security update for @tryghost/activitypub (GHSA-xpp7-93x6-v29m)

high Tenable Self-Hosted Container Security Plugin ID 445644

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - @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. (CVE-2026-53950)

Solution

Update the @tryghost/activitypub library and its related packages to version 3.1.0 or later.

See Also

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

Plugin Details

Severity: High

ID: 445644

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 8/5/2026

Updated: 8/5/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.98

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-53950

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/4/2026

Vulnerability Publication Date: 6/24/2026

Reference Information

CVE: CVE-2026-53950

cwe: CWE-79