9.6

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

Analyzed
Published 27-06-2025Last modified 27-06-2025

Vulnerability summary

CVE-2025-52553 is a critical (CVSS 9.6) Improper Authentication vulnerability in goauthentik authentik. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 44.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
9.6/10
010
Critical · v3.1 (NVD)
EPSS score
0.52%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 27-06-2025
    PublishedVulnerability first disclosed.
  2. 27-06-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.52% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Goauthentik1 product
  • authentik≥ 2025.6.0-rc1, < 2025.6.3 | < 2025.4.3 | ≥ 2025.6.0, < 2025.6.3

1 vendor · 1 product

References

4 links