CVE-2025-52553 authentik has Insufficient Session verification for Remote Access Control endpoint access
Attackers can hijack remote access sessions by reusing tokens, allowing unauthorized access to user sessions in authentik.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-52553?
CVE-2025-52553 is a medium-severity authentication bypass vulnerability in goauthentik authentik, published on 27 Jun 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-287
Which versions are affected by CVE-2025-52553?
1 open source package ship an affected version, including authentik. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
authentik Bitnami | All versions | 2025.4.3, 2025.6.3 |
Products include Goauthentik Authentik.
How do I fix CVE-2025-52553?
Upgrade authentik to a fixed version for your release line: 2025.4.3 or 2025.6.3.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-52553 being exploited?
There is no known exploitation of CVE-2025-52553 in the wild and no public exploit code.
Other vulnerabilities in goauthentik authentik
- CVE-2026-49448 authentik: SourceStage bypass via empty POST
- CVE-2023-46249 authentik potential installation takeover when default admin user is deleted
- CVE-2022-23555 authentik vulnerable to Improper Authentication via invitation URL token reuse
- CVE-2026-42849 authentik: Reflected XSS in SFE AutosubmitStage allows IDP account takeover
- CVE-2026-25227 authentik affected by Remote Code Execution via Context Key Injection in PropertyMapping Test Endpoint
Sources
Also known as BIT-authentik-2025-52553, GHSA-wr3v-9p2c-chx7.