CVE-2022-29172Network attack vector

Email HTML injection via unsanitized signup fields

Published May 5, 2022 · Updated Apr 23, 2025

Cross-site scripting in Auth0 Lock before 11.33.0 allows remote attackers to inject a malicious link into verification emails. The signUp function in src/connection/database/actions.js copied additional signup field values into root profile fields or user_metadata without stripping HTML, allowing the name value to reach the email template. Exploitation requires additional signup fields and recipient interaction with the generated email; the bounded result is attacker-controlled HTML and links in that message.

CVSS severity6.1
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Auth0 Lock before 11.33.0 allows remote attackers to inject a malicious link into verification emails. The signUp function in src/connection/database/actions.js copied additional signup field values into root profile fields or user_metadata without stripping HTML, allowing the name value to reach the email template. Exploitation requires additional signup fields and recipient interaction with the generated email; the bounded result is attacker-controlled HTML and links in that message.

The record

CVE
CVE-2022-29172
Published
May 5, 2022
Updated
Apr 23, 2025
Vendor
Auth0
Product
Lock
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 11.33.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Auth0 · Lockversion=< 11.33.0

Published CVSS scores

2.6NIST NVDAV:N/AC:H/Au:N/C:N/I:P/A:N
6.1GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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