CVE-2026-100521— Cotonti through 1.0.0 Reflected XSS via search highlight parameter
Quick assessment
Affected
Cotonti Cotonti
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.
Cotonti 1.0.0 及更早版本中的搜索插件存在反射型跨站脚本（XSS）漏洞，其“highlight”参数未对 HTML 或 JavaScript 内容进行转义处理。攻击者可以构造包含恶意 JavaScript 代码的链接，通过该“highlight”参数注入脚本。当任何用户（包括管理员）打开该链接时，恶意脚本将在其浏览器中执行。
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I. Basic Information for CVE-2026-100521
Vulnerability Information
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Vulnerability Title
Cotonti through 1.0.0 Reflected XSS via search highlight parameter
Source: CVE Program / CVE List V5
Vulnerability Description
Cotonti through 1.0.0 contains a reflected cross-site scripting vulnerability in the search plugin highlight parameter that performs no HTML or JavaScript escaping. Attackers can craft malicious links with injected JavaScript in the highlight parameter that executes in the browser of any visitor who opens the link, including administrators.
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
II. Public POCs for CVE-2026-100521
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-100521 (1)
Vendor Pages for CVE-2026-100521 (1)
Other References for CVE-2026-100521 (4)
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https://github.com/Cotonti/Cotonti/issues/1907 issue-tracking
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https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/search/search.header.php technical-description
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https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/search/search.page.first.php technical-description
Same Patch Batch · Cotonti · 2026-09-26 · 4 CVEs total
| CVE-2026-100523 | 6.1 MEDIUM | Cotonti through 1.0.0 Open Redirect via message.php redirect parameter |
| CVE-2026-100522 | 6.1 MEDIUM | Cotonti through 1.0.0 Reflected XSS via message.php lng parameter |
| CVE-2026-100524 | 5.4 MEDIUM | Cotonti through 1.0.0 Cross-Site Request Forgery via Extensions Manager |
IV. Related Vulnerabilities
Same product: Cotonti
-
CVE-2026-100524
Cotonti through 1.0.0 Cross-Site Request Forgery via Extensi -
CVE-2026-100523
Cotonti through 1.0.0 Open Redirect via message.php redirect -
CVE-2026-100522
Cotonti through 1.0.0 Reflected XSS via message.php lng para -
CVE-2026-93873
Cotonti through 1.0.0 Cross-Site Request Forgery in the Cont -
CVE-2026-93872
Cotonti 1.0.0 PHP Object Injection via Comments Plugin Edit
Same vendor: Cotonti
-
CVE-2026-100524
Cotonti through 1.0.0 Cross-Site Request Forgery via Extensi -
CVE-2026-100523
Cotonti through 1.0.0 Open Redirect via message.php redirect -
CVE-2026-100522
Cotonti through 1.0.0 Reflected XSS via message.php lng para -
CVE-2026-93873
Cotonti through 1.0.0 Cross-Site Request Forgery in the Cont -
CVE-2026-93872
Cotonti 1.0.0 PHP Object Injection via Comments Plugin Edit
Same weakness: CWE-79
-
CVE-2026-73641
Multiple Reflected XSS in Dayforce Payroll -
CVE-2026-82326
HTML Injection in Enocta Educational's Enocta Platform -
CVE-2026-87752
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CVE-2026-7171
Stored Cross-Site Scripting (XSS) in TPVEnlanube -
CVE-2026-7172
Stored Cross-Site Scripting (XSS) in TPVEnlanube
V. Comments for CVE-2026-100521
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