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CVE-2026-64972— Reflected XSS in ATutor

Quick assessment

Affected
ATutor ATutor
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.

ATutor 存在通过 preview.php 中 popup 参数反射型跨站脚本攻击（XSS）的安全漏洞。经过身份验证的攻击者可以在 popup 参数中注入双引号，从而跳出属性值范围，并附加新的事件处理程序（例如 onload）。虽然相关的 preview_top.php 文件对这些参数进行了过滤处理，但这并不能防止由 preview.php 自身渲染的父级 frameset 中发生的跨站脚本攻击。 该产品已不再获得主动支持，且相关漏洞尚未修复。仅对版本 2.2.4 进行了测试并确认存在漏洞，其他版本未经过测试，

CVSS 4.8 · Medium EPSS 0.29% · P22

Affected Version Matrix 1

VendorProduct Version RangeStatus
ATutor ATutor 2.2.4 affected
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I. Basic Information for CVE-2026-64972

Vulnerability Information
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Vulnerability Title
Reflected XSS in ATutor
Source: CVE Program / CVE List V5
Vulnerability Description
ATutor is vulnerable to Reflected XSS via popup parameter in preview.php. An authenticated attacker can inject a double quote into the popup parameter, break out of the attribute value, and append a new event handler such as onload. The related preview_top.php file sanitises these parameters, but that does not prevent XSS in the parent frameset rendered by preview.php itself. Product is no longer actively supported and the vulnerabilities have not been fixed. Only version 2.2.4 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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
ATutor ATutor 2.2.4 -

II. Public POCs for CVE-2026-64972

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III. Intelligence Information for CVE-2026-64972

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Security Blog Posts for CVE-2026-64972 (1)

Same Patch Batch · ATutor · 2026-08-20 · 13 CVEs total

CVE-2026-64960 8.7 HIGH Remote Code Execution via Unrestricted File Upload in ATutor
CVE-2026-64966 8.7 HIGH Path Traversal leading to Remote Code Execution in ATutor
CVE-2026-64967 6.9 MEDIUM Path Traversal in ATutor
CVE-2026-64964 6.3 MEDIUM Generation of Predictable Email Confirmation Token in ATutor
CVE-2026-64961 6.3 MEDIUM Authentication Bypass in ATutor
CVE-2026-64965 5.3 MEDIUM Missing Authorization Check in ATutor
CVE-2026-64969 5.3 MEDIUM Insecure Direct Object Reference in ATutor
CVE-2026-64968 5.1 MEDIUM Server-Side Request Forgery in ATutor
CVE-2026-64962 5.1 MEDIUM Cross-Site Request Forgery (CSRF) in ATutor
CVE-2026-64970 5.1 MEDIUM Stored XSS in ATutor
CVE-2026-64971 4.8 MEDIUM Reflected XSS in ATutor
CVE-2026-64963 2.3 LOW Path Traversal in ATutor

IV. Related Vulnerabilities

Same product: ATutor
Same vendor: ATutor
Same weakness: CWE-79

V. Comments for CVE-2026-64972

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