CVE-2026-109396
Medium
Description
Thelia before 3.1.2 and 3.2.x before 3.2.1 contains a CSV formula injection vulnerability that allows unauthenticated visitors to inject spreadsheet formulas by supplying crafted registration, checkout or newsletter fields. Attackers can submit names, addresses or phone values starting with =, +, - or @ that CSVSerializer exports verbatim, executing formulas in the administrator's spreadsheet application.
SeverityMedium
CVSS4.2
Exploit probability—
Product
Thelia
PublishedOct 12, 2026
First seenOct 12, 2026
Weakness typeCWE-1236CWE-1236
How to fix
Update
- Thelia Thelia3.1.2, 3.2.1 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Thelia Thelia | v < 3.1.2, 3.2.0 ≤ v < 3.2.1 | 3.1.2, 3.2.1 |
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