CVE-2026-109396

EUVD-2026-97493
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.2 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/thelia/thelia/blob/3.2.0/core/lib/Thelia/Core/Serializer/Serializer/CSVSerializer.php
https://github.com/thelia/thelia/commit/6e46059225d87565caf4859ec0f764354e82ce95
https://github.com/thelia/thelia/commit/c00a26f0631ed9de3c4466176db6e808a25034aa
https://github.com/thelia/thelia/releases/tag/3.1.2
https://github.com/thelia/thelia/releases/tag/3.2.1
https://github.com/thelia/thelia/security/advisories/GHSA-gcgv-f8rf-w2wc
https://www.vulncheck.com/advisories/thelia-before-3.1.2-and-3.2-x-before-3.2.1-csv-formula-injection-via-exports