{"id":"CVE-2026-103522","title":"In Thelia v2.6.0, the store banner upload feature performs insufficient filetype validation that relies exclusively on client‑supplied MIME types","summary":"In Thelia v2.6.0, the store banner upload feature performs insufficient filetype validation that relies exclusively on client‑supplied MIME types. An attacker with administrative access can upload a PHP file disguised as an image to bypa…","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-434"],"published":"2026-10-12","updated":"2026-10-12","sourceUpdated":"2026-10-12T15:17:05.690","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103522","references":[{"url":"https://kb.cert.org/vuls/id/162329","label":"cret@cert.org"}],"tags":["nvd"],"ingestedAt":"2026-10-12T15:55:08.153Z","slug":"CVE-2026-103522","body":"## Overview\n\nIn Thelia v2.6.0, the store banner upload feature performs insufficient filetype validation that relies exclusively on client‑supplied MIME types. An attacker with administrative access can upload a PHP file disguised as an image to bypass validation and achieve remote code execution on the underlying server.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}