CVE-2021-32641

Reflected XSS when using flashMessages

MEDIUM
6.1
CVSS Score
Published: June 4, 2021 at 09:10 PM UTC
Updated: June 17, 2026 at 03:53 AM UTC
1 product affected across 1 vendorLock

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Severity
MEDIUM6.1
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 11.30.0
Affected range stops below 11.30.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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