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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://backdropcms.org/security/backdrop-sa-core-2026-007 |
|
History
Wed, 21 Oct 2026 03:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
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
|
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
Updated: 2026-10-21T02:10:38.242Z
Status : Awaiting Analysis
Published: 2026-10-16T04:18:29.820
Modified: 2026-10-21T03:17:18.670
Link: CVE-2026-111442
No data.