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Home/Vulnerability/CVE-2026-45011

CVE-2026-45011

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

Published: Jun 12, 2026Updated: Jun 12, 2026 Sources: CVE List NVD
NVD MITRE
7.3CVSS
HIGH

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None

Weaknesses

CWE-79CWE-116

Affected Products

apostrophe
apostrophecms
Web & CMS Plugins / cms-core
apostrophecmscommercialWeb & CMS Pluginsaka apostrophecms, apostrophe

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-5f64-7vfc-rcx6
github.com
https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe%404.29.0
github.com

Timeline

Published
Jun 12, 2026
Last Updated
Jun 12, 2026

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