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CVE-2026-89307— HTML injection allows open redirection in WordPress theme design-scuole-wordpress-theme

Quick assessment

Affected
Developers Italia design-scuole-wordpress-theme
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.

WordPress 主题 “Design Scuole Italia” 中的 “Firma Circolare”（循环签名）功能存在漏洞，允许经过身份验证的攻击者通过 参数注入任意 HTML，从而可将访问该页面的用户强制重定向到攻击者控制的 URL（即存储型 HTML 注入/开放重定向漏洞）。

CVSS 5.1 · Medium

Possible ATT&CK Techniques 1 AI

T1059.001 · PowerShell
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I. Basic Information for CVE-2026-89307

Vulnerability Information
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Vulnerability Title
HTML injection allows open redirection in WordPress theme design-scuole-wordpress-theme
Source: CVE Program / CVE List V5
Vulnerability Description
The "Firma Circolare" feature in the "Design Scuole Italia" WordPress theme allows an authenticated attacker to inject arbitrary HTML via the sign parameter, enabling forced redirection of visiting users to an attacker-controlled URL (Stored HTML Injection / Open Redirect).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Developers Italia design-scuole-wordpress-theme 1.0 ~ 2.17.3 -

II. Public POCs for CVE-2026-89307

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III. Intelligence Information for CVE-2026-89307

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Vendor Advisories for CVE-2026-89307 (1)

Other References for CVE-2026-89307 (1)

Same Patch Batch · Developers Italia · 2026-09-15 · 4 CVEs total

CVE-2026-87791 8.7 HIGH Path traversal vulnerability in WordPress theme design-scuole-wordpress-theme
CVE-2026-87792 8.7 HIGH Multiple authorization bypass in WordPress theme design-scuole-wordpress-theme
CVE-2026-87793 5.1 MEDIUM Reflected XSS in WordPress theme design-scuole-wordpress-theme

IV. Related Vulnerabilities

Same product: design-scuole-wordpress-theme
Same vendor: Developers Italia
Same weakness: CWE-601

V. Comments for CVE-2026-89307

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