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CVE-2026-109396— Thelia before 3.1.2 and 3.2.x before 3.2.1 CSV Formula Injection via Exports

Quick assessment

Affected
Thelia Thelia
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Thelia 3.1.2 之前版本以及 3.2.x 中早于 3.2.1 的版本中，存在一个 CSV 公式注入漏洞。攻击者可以通过精心构造注册、结账或新闻订阅字段，以未认证访问者的身份注入电子表格公式。攻击者可以提交以“=”、“+”、“-”或“@”开头的人名、地址或电话号码值，这些值会被 CSVSerializer 原样导出，从而在管理员的电子表格应用程序中执行恶意公式。

CVSS 4.2 · Medium EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Thelia Thelia < 3.1.2 affected
3.2.0< 3.2.1 affected
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I. Basic Information for CVE-2026-109396

Vulnerability Information
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Vulnerability Title
Thelia before 3.1.2 and 3.2.x before 3.2.1 CSV Formula Injection via Exports
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1236
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Thelia Thelia 0 ~ 3.1.2 -

II. Public POCs for CVE-2026-109396

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III. Intelligence Information for CVE-2026-109396

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Patches & Fixes for CVE-2026-109396 (3)

Vendor Advisories for CVE-2026-109396 (2)

Vendor Pages for CVE-2026-109396 (2)

Same Patch Batch · Thelia · 2026-10-12 · 13 CVEs total

CVE-2026-109397 7.2 HIGH Thelia before 3.1.2 and 3.2.x before 3.2.1 File Upload RCE via Filename Trailing Space
CVE-2026-103521 CVE-2026-103521
CVE-2026-103524 CVE-2026-103524
CVE-2026-103523 CVE-2026-103523
CVE-2026-103522 CVE-2026-103522
CVE-2026-103526 CVE-2026-103526
CVE-2026-103529 CVE-2026-103529
CVE-2026-103537 CVE-2026-103537
CVE-2026-103528 CVE-2026-103528
CVE-2026-103527 CVE-2026-103527
CVE-2026-103535 CVE-2026-103535
CVE-2026-107248 CVE-2026-107248

IV. Related Vulnerabilities

Same product: Thelia
Same vendor: Thelia
Same weakness: CWE-1236

V. Comments for CVE-2026-109396

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