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CVE-2026-64964— Generation of Predictable Email Confirmation Token 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 的邮箱确认令牌生成缺乏足够的随机性，导致其可被预测。由于账户确认功能中使用了不足够随机的值，攻击者如果已知或能够预测与用户注册相关的这些值，即可猜测出有效的账户激活令牌。这使得攻击者无需访问受害者的邮箱收件箱，即可激活一个未确认的账户。 该产品已不再得到积极支持，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，其他版本未经测试，但也可能存在漏洞。

CVSS 6.3 · Medium EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1136 · Create Account

Affected Version Matrix 1

VendorProduct Version RangeStatus
ATutor ATutor 2.2.4 affected
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I. Basic Information for CVE-2026-64964

Vulnerability Information
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Vulnerability Title
Generation of Predictable Email Confirmation Token in ATutor
Source: CVE Program / CVE List V5
Vulnerability Description
ATutor generates predictable email confirmation tokens due to the use of insufficiently random values in the account confirmation functionality. Due to the use of predictable values related to user registration, an attacker who knows or can predict these values can guess valid account activation tokens. This allows an attacker to activate an unconfirmed account without access to the victim's email inbox. 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:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
可预测问题
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ATutor ATutor 2.2.4 -

II. Public POCs for CVE-2026-64964

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III. Intelligence Information for CVE-2026-64964

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Security Blog Posts for CVE-2026-64964 (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-2026-64961 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-2026-64972 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-340

V. Comments for CVE-2026-64964

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