CVE-2026-103521
High
Description
In Thelia v2.6.0, the document upload endpoint properly blocks the upload of executable file types, but the document update endpoint does not perform the same validation. An attacker with administrative Thelia permissions can exploit this vulnerability to upload arbitrary executable files, such as malicious PHP scripts, to achieve remote code execution on the underlying server.
SeverityHigh
CVSS7.2
Exploit probability—
Product
Thelia
PublishedOct 12, 2026
First seenOct 12, 2026
Weakness typeCWE-434Unrestricted upload of dangerous file type
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Thelia Thelia | v ≤ 2.6.0 | — |
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