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CVE-2026-109328— Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name

Quick assessment

Affected
Admidio admidio
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.

Admidio 5.0.0 至 5.0.15 版本之前，在 RegistrationPresenter.php 中存在一个未认证的存储型跨站脚本（XSS）漏洞。该漏洞会将未经编码的 FIRST_NAME 注册值直接插入到未转义的 data-message 属性中。攻击者可以通过注册时构造一个包含双引号包裹的事件处理程序（例如 onmouseover），当管理员在“管理注册”页面悬停查看该注册条目时，即可在管理员的会话上下文中执行恶意 JavaScript 代码。

CVSS 6.1 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProduct Version RangeStatus
Admidio admidio 5.0.0< 5.0.15 affected
5.0.15 unaffected
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I. Basic Information for CVE-2026-109328

Vulnerability Information
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Vulnerability Title
Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name
Source: CVE Program / CVE List V5
Vulnerability Description
Admidio 5.0.0 before 5.0.15 contains an unauthenticated stored cross-site scripting vulnerability in RegistrationPresenter.php, which inserts the raw FIRST_NAME registration value into an unencoded data-message attribute. Attackers can register with a double-quoted event handler that executes JavaScript in an administrator's session when they hover the entry on the Manage registrations page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Admidio admidio 5.0.0 ~ 5.0.15 -

II. Public POCs for CVE-2026-109328

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III. Intelligence Information for CVE-2026-109328

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Vendor Advisories for CVE-2026-109328 (2)

Same Patch Batch · Admidio · 2026-10-12 · 3 CVEs total

CVE-2026-109329 6.5 MEDIUM Admidio 4.3.2 through 4.3.17 and 5.0.0 before 5.0.15 Cross-Organization Access Control Byp
CVE-2026-109327 6.1 MEDIUM Admidio 4.0.12 through 4.3.17 and 5.0.0 before 5.0.15 Reflected XSS via system/redirect.ph

IV. Related Vulnerabilities

Same product: admidio
Same vendor: Admidio
Same weakness: CWE-79

V. Comments for CVE-2026-109328

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