HTML injection with additional signup fields
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
Auth0 is an authentication broker that supports both social and enterprise identity providers, including Active Directory, LDAP, Google Apps, and Salesforce. In versions before `11.33.0`, when the “additional signup fields” feature [is configured](https://github.com/auth0/lock#additional-sign-up-fields), a malicious actor can inject invalidated HTML code into these additional fields, which is then stored in the service `user_metdata` payload (using the `name` property). Verification emails, when applicable, are generated using this metadata. It is therefor possible for an actor to craft a malicious link by injecting HTML, which is then rendered as the recipient's name within the delivered email template. You are impacted by this vulnerability if you are using `auth0-lock` version `11.32.2` or lower and are using the “additional signup fields” feature in your application. Upgrade to version `11.33.0`.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| auth0 | lock | before 11.33.0 | 11.33.0 | Patch available | CNA |
| — | auth0-lock (npm) | before 11.33.0 | 11.33.0 | Patch available | GHSA-7ww6-75fj-jcj7 |
- lock Vendorauth0 Affected before 11.33.0 Fixed in 11.33.0 Patch available CNA
- auth0-lock (npm) Vendor— Affected before 11.33.0 Fixed in 11.33.0 Patch available GHSA-7ww6-75fj-jcj7
Remediation
- Fix · CNA lock (auth0) Fixed in 11.33.0
- Fix · GHSA-7ww6-75fj-jcj7 auth0-lock (npm) Fixed in 11.33.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-29172
- 2026-10-03 Alias added: GHSA-7ww6-75fj-jcj7
- 2026-11-06 EPSS moved to the 50th–90th percentile
References
More auth0 Lock vulnerabilities
- TI-2021-12309 Reflected XSS when using flashMessages CVSS 3.1HIGH 8.1
- TI-2020-11893 DOM-based XSS in auth0-lock CVSS 3.1MEDIUM 6.4
- TI-2019-14549 Auth0 Lock before 11.21.0 allows XSS when additionalSignUpFields is used with an untrusted placeholder. CVSS 3.1MEDIUM 6.1
Sources
- CVE-2022-29172 · CVE Program
- CVE-2022-29172 · NVD
- FIRST EPSS
- GHSA-7ww6-75fj-jcj7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences