CVE-2021-29456

Summary

Authelia is an open-source authentication and authorization server providing 2-factor authentication and single sign-on (SSO) for your applications via a web portal. In versions 4.27.4 and earlier, utilizing a HTTP query parameter an attacker is able to redirect users from the web application to any domain, including potentially malicious sites. This security issue does not directly impact the security of the web application itself. As a workaround, one can use a reverse proxy to strip the query parameter from the affected endpoint. There is a patch for version 4.28.0.

Affected Software

VendorProductVersion RangeStatus
autheliaauthelia<= 4.27.4affected

Weaknesses

  • CWE-601: CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

ADP Enrichment

CVE Program Container

Additional References

References