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Servers and applications

CVE-2024-21637

XSS in Authentik via JavaScript-URI as Redirect URI and form_post Response Mode

Severity
Medium 5.4
Published
9 Jan 2024
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2023.8.6, 2023.10.6
Also known as
GHSA-rjpr-7w8c-gv3j
Sources
NVD, Project advisories (GitHub)

Description

Authentik is an open-source Identity Provider. Authentik is a vulnerable to a reflected Cross-Site Scripting vulnerability via JavaScript-URIs in OpenID Connect flows with `response_mode=form_post`. This relatively user could use the described attacks to perform a privilege escalation. This vulnerability has been patched in versions 2023.10.6 and 2023.8.6.

Affected software

SoftwareAffected versions
authentikServers and applications · cpe:a:goauthentik:authentik
  • From 2023.8.0 before 2023.8.6
  • From 2023.10.0 before 2023.10.6
authentikServers and applications · github:goauthentik/authentik
  • Every version before 2023.10.6
  • Every version before 2023.8.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2024-21637
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2024-21637
  • GitHub Advisory Database https://github.com/advisories/GHSA-rjpr-7w8c-gv3j
  • github.com https://github.com/goauthentik/authentik/security/advisories/GHSA-rjpr-7w8c-gv3j