Backdrop CMS Core 1.35.x before 1.35.2 and 1.34.x before 1.34.6 does not sufficiently validate uploaded SVG images to ensure they lack potentially dangerous SVG tags. SVG images can contain clickable links or executable scripting. By uploading a crafted SVG, it is possible to execute scripting in the browser when an SVG image is viewed. This issue is mitigated by the attacker needing to be able to upload SVG images, and that Backdrop embeds all uploaded SVG images within <img> tags, which prevents script from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.
History

Wed, 21 Oct 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 16 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
Title Backdrop CMS Core Unsafe SVG Upload Allows Client‑Side Script Execution

Fri, 16 Oct 2026 03:30:00 +0000

Type Values Removed Values Added
Description Backdrop CMS Core 1.35.x before 1.35.2 and 1.34.x before 1.34.6 does not sufficiently validate uploaded SVG images to ensure they lack potentially dangerous SVG tags. SVG images can contain clickable links or executable scripting. By uploading a crafted SVG, it is possible to execute scripting in the browser when an SVG image is viewed. This issue is mitigated by the attacker needing to be able to upload SVG images, and that Backdrop embeds all uploaded SVG images within <img> tags, which prevents script from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.
First Time appeared Backdropcms
Backdropcms backdrop
Weaknesses CWE-79
CPEs cpe:2.3:a:backdropcms:backdrop:*:*:*:*:*:*:*:*
Vendors & Products Backdropcms
Backdropcms backdrop
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-10-16T03:09:43.812Z

Updated: 2026-10-21T02:10:42.533Z

Reserved: 2026-10-16T03:09:42.935Z

Link: CVE-2026-111442

cve-icon Vulnrichment

Updated: 2026-10-21T02:10:38.242Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-16T04:18:29.820

Modified: 2026-10-21T03:17:18.670

Link: CVE-2026-111442

cve-icon Redhat

No data.