CVE-2026-109396

CVSS 4.2 (medium) · published 2026-10-12

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.

Weakness: CWE-1236

Source: NVD CVE-2026-109396

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
• https://github.com/thelia/thelia/security/advisories/GHSA-gcgv-f8rf-w2wc

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