Authentik

{pk}/ endpoint. The UserSerializer skips the enable_group_superuser check enforced in the dedicated group-management paths, letting delegated user-management roles promote themselves or others to administrator-equivalent privilege. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV, but the trivial attack mechanics (a single PATCH request) make weaponization straightforward for any tenant that has delegated user administration.

authentik is an open-source identity provider. In versions prior to 2025.12.5 and 2026.2.0-rc1 through 2026.2.2, authenticated non-admin users with at least one OAuth2 access token can retrieve the client_secret of confidential OAuth2 providers they have previously authenticated against, exposing sensitive information to users without the correct permissions. This logic is GET /api/v3/oauth2/access_tokens/. The API response includes a nested provider object containing client_id and client_secret for providers configured with client_type: confidential, which should not be accessible to low-privilege users. This issue has been fixed in versions 2025.12.5 and 2026.2.3.

authentik is an open-source identity provider. [CVSS 8.8 HIGH]

Authentik Proxy Provider allows authentication bypass through malformed cookies when deployed with Traefik or Caddy as a reverse proxy, enabling attackers to access protected applications by circumventing forward authentication checks. The vulnerability stems from improper cookie validation that prevents the setting of required authentik-specific X-Authentik-* headers, potentially granting unauthorized access depending on the backend application's configuration. Affected versions prior to 2025.10.4 and 2025.12.4 are vulnerable; patches are available in the specified releases.

Code injection in authentik identity provider from 2021.3.1 through multiple versions. Users with delegated permissions can inject code. Patch available.

authentik is an open-source Identity Provider. Rated medium severity (CVSS 5.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

authentik is an open-source Identity Provider. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity.

authentik is an open-source identity provider. After authorizing access to a RAC endpoint, authentik creates a token which is used for a single connection and is sent to the client in the URL. This token is intended to only be valid for the session of the user who authorized the connection, however this check is missing in versions prior to 2025.6.3 and 2025.4.3. When, for example, using RAC during a screenshare, a malicious user could access the same session by copying the URL from the shown browser. authentik 2025.4.3 and 2025.6.3 fix this issue. As a workaround, it is recommended to decrease the duration a token is valid for (in the RAC Provider settings, set Connection expiry to `minutes=5` for example). The maintainers of authentik also recommend enabling the option Delete authorization on disconnect.

authentik is an open-source identity provider. Rated high severity (CVSS 8.0), this vulnerability is remotely exploitable, no authentication required.

Authentik project is vulnerable to Stored XSS attacks through uploading crafted SVG files that are used as application icons. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.

Authentik is an open-source Identity Provider. Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.