CVE-2026-45011

Apostrophe has stored XSS via javascript: URL in Image Widget Link

Published Jun 12, 2026 CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Description
ApostropheCMS is an open-source Node.js content management system. Version 4.29.0 has a stored cross-site scripting vulnerability in the image widget functionality. A user with the Editor role can configure an image widget link to use a javascript: URL payload. Because editors have permission to publish pages, the malicious widget can be published to the live site. When another user, including an administrator or public visitor, clicks the affected image/link, arbitrary JavaScript executes in the victim’s browser. As of time of publication, no known patched versions are available.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-5f64-7vfc-rcx6 Apostrophe has stored XSS via javascript: URL in Image Widget Link
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apostrophecms
Apostrophecms apostrophecms
Vendors & Products Apostrophecms
Apostrophecms apostrophecms
Type Values Removed Values Added
Description ApostropheCMS is an open-source Node.js content management system. Version 4.29.0 has a stored cross-site scripting vulnerability in the image widget functionality. A user with the Editor role can configure an image widget link to use a javascript: URL payload. Because editors have permission to publish pages, the malicious widget can be published to the live site. When another user, including an administrator or public visitor, clicks the affected image/link, arbitrary JavaScript executes in the victim’s browser. As of time of publication, no known patched versions are available.
Title Apostrophe has stored XSS via javascript: URL in Image Widget Link
Weaknesses CWE-116
CWE-79
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 15, 2026, 3:16 PM
Reserved
May 8, 2026, 4:58 PM
Status
Deferred
Published
Jun 12, 2026, 9:16 PM
Modified
Oct 26, 2026, 11:10 AM