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CVE-2026-103522

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 v2.6.0 版本中，商店横幅上传功能存在文件类型验证不充分的问题，其验证逻辑完全依赖于客户端提供的 MIME 类型。攻击者若拥有管理员权限，便可上传伪装成图片的 PHP 文件，从而绕过验证机制，在底层服务器上实现远程代码执行。

AI Predicted 9.1 Difficulty: Trivial

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell

Affected Version Matrix 1

VendorProduct Version RangeStatus
Thelia Thelia ≤ 2.6.0 affected
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I. Basic Information for CVE-2026-103522

Vulnerability Information
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Vulnerability Title
CVE-2026-103522
Source: CVE Program / CVE List V5
Vulnerability Description
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 bypass validation and achieve remote code execution on the underlying server.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Thelia Thelia 0 ~ 2.6.0 -

II. Public POCs for CVE-2026-103522

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III. Intelligence Information for CVE-2026-103522

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Vendor Advisories for CVE-2026-103522 (1)

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-2026-109396 4.2 MEDIUM Thelia before 3.1.2 and 3.2.x before 3.2.1 CSV Formula Injection via Exports
CVE-2026-103521 CVE-2026-103521
CVE-2026-103524 CVE-2026-103524
CVE-2026-103523 CVE-2026-103523
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

V. Comments for CVE-2026-103522

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