Thelia before 3.1.2 and 3.2.x before 3.2.1 contains an unrestricted file upload vulnerability that allows authenticated back-office users to upload PHP files by appending a trailing space to filenames. FileProcessorService validates the raw filename but FileManager::sanitizeFileName() strips the space, storing an executable .php file under public/cache/documents/ for code execution as the web server user.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-434"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109397.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "3.1.2"
},
{
"introduced": "3.2.0"
},
{
"fixed": "3.2.1"
}
],
"source": "AFFECTED_FIELD"
}