{"id":"CVE-2026-109396","title":"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","summary":"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…","severity":"medium","cvss":4.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","cwe":["CWE-1236"],"published":"2026-10-12","updated":"2026-10-13","sourceUpdated":"2026-10-13T20:41:35.943","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109396","references":[{"url":"https://github.com/thelia/thelia/blob/3.2.0/core/lib/Thelia/Core/Serializer/Serializer/CSVSerializer.php","label":"disclosure@vulncheck.com"},{"url":"https://github.com/thelia/thelia/commit/6e46059225d87565caf4859ec0f764354e82ce95","label":"disclosure@vulncheck.com"},{"url":"https://github.com/thelia/thelia/commit/c00a26f0631ed9de3c4466176db6e808a25034aa","label":"disclosure@vulncheck.com"},{"url":"https://github.com/thelia/thelia/releases/tag/3.1.2","label":"disclosure@vulncheck.com"},{"url":"https://github.com/thelia/thelia/releases/tag/3.2.1","label":"disclosure@vulncheck.com"},{"url":"https://github.com/thelia/thelia/security/advisories/GHSA-gcgv-f8rf-w2wc","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/thelia-before-3.1.2-and-3.2-x-before-3.2.1-csv-formula-injection-via-exports","label":"disclosure@vulncheck.com"},{"url":"https://github.com/thelia/thelia/security/advisories/GHSA-gcgv-f8rf-w2wc","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00232,"epssPercentile":0.14014,"ingestedAt":"2026-10-12T16:57:59.914Z","vendor":"Thelia","product":"Thelia","affected":["Thelia < 3.1.2","Thelia >= 3.2.0 < 3.2.1"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T15:21:28.032308Z"},"slug":"CVE-2026-109396","body":"## Overview\n\nThelia 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":35,"depthScoreParts":{"impact":23.1,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":220936,"id":"CVE-2026-109396","ts":1792026928591,"field":"exploit_available","old":"false","new":"true"}]}