CVE-2026-120248
Medium
Description
Thelia before 3.1.1 contains a stored cross-site scripting vulnerability that allows authenticated back-office administrators with store update permission to inject scripts by uploading unsanitized SVG logo_file or banner_file images. Attackers can upload an SVG with an onload payload served from /admin/store-media/logo or the public cache/images/store/ directory to execute scripts against visitors and higher-privileged administrators.
SeverityMedium
CVSS4.8
Exploit probability—
Product
Thelia
PublishedNov 1, 2026
First seenNov 4, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Thelia Thelia3.1.1 or later
- Thelia Thelia Core3.1.1 or later
- Thelia Thelia Back-office Default Twig Template1.1.1 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Thelia Thelia | v < 3.1.1 | 3.1.1 |
| Thelia Thelia Core | v < 3.1.1 | 3.1.1 |
| Thelia Thelia Back-office Default Twig Template | v < 1.1.1 | 1.1.1 |
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