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CVE-2021-32641— Reflected XSS when using flashMessages

Quick assessment

Affected
auth0 lock
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Auth0是是一个身份验证代理，支持社会和企业身份提供者，包括Active Directory、LDAP、谷歌Apps和Salesforce。 auth0-lock在11.30.0版本存在跨站脚本漏洞，该漏洞源于攻击者可利用该漏洞可以执行任意代码库跨站脚本攻击。

CVSS 8.1 · High EPSS 1.54% · P74

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-32641

Vulnerability Information
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Vulnerability Title
Reflected XSS when using flashMessages
Source: CVE Program / CVE List V5
Vulnerability Description
auth0-lock is Auth0's signin solution. Versions of nauth0-lock before and including `11.30.0` are vulnerable to reflected XSS. An attacker can execute arbitrary code when the library's `flashMessage` feature is utilized and user input or data from URL parameters is incorporated into the `flashMessage` or the library's `languageDictionary` feature is utilized and user input or data from URL parameters is incorporated into the `languageDictionary`. The vulnerability is patched in version 11.30.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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
Vulnerability Title
Auth0 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Auth0是是一个身份验证代理，支持社会和企业身份提供者，包括Active Directory、LDAP、谷歌Apps和Salesforce。 auth0-lock在11.30.0版本存在跨站脚本漏洞，该漏洞源于攻击者可利用该漏洞可以执行任意代码库跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
auth0 lock <= 11.30.0 -

II. Public POCs for CVE-2021-32641

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6417 chars
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III. Intelligence Information for CVE-2021-32641

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Patches & Fixes for CVE-2021-32641 (1)

Vendor Advisories for CVE-2021-32641 (1)

Other References for CVE-2021-32641 (1)

IV. Related Vulnerabilities

Same product: lock
Same vendor: auth0
Same weakness: CWE-79

V. Comments for CVE-2021-32641

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