9.8

CVE-2024-52289: authentik has an insecure default configuration for OAuth2 Redirect URIs

Modified
Published 21-11-2024Last modified 23-09-2025

Vulnerability summary

CVE-2024-52289 is a critical (CVSS 9.8) Incorrect Regular Expression vulnerability in goauthentik authentik. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 65.4% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.9 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.09%
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. 21-11-2024
    PublishedVulnerability first disclosed.
  2. 23-09-2025
    Last modifiedVulnerability information updated.

Description

authentik is an open-source identity provider. Redirect URIs in the OAuth2 provider in authentik are checked by RegEx comparison. When no Redirect URIs are configured in a provider, authentik will automatically use the first redirect_uri value received as an allowed redirect URI, without escaping characters that have a special meaning in RegEx. Similarly, the documentation did not take this into consideration either. Given a provider with the Redirect URIs set to https://foo.example.com, an attacker can register a domain fooaexample.com, and it will correctly pass validation. authentik 2024.8.5 and 2024.10.3 fix this issue. As a workaround, When configuring OAuth2 providers, make sure to escape any wildcard characters that are not intended to function as a wildcard, for example replace `.` with `\.`.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.09%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.09% 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, no user interaction (CVSS vector). Other conditions: not stated in public data.

Goauthentik1 product
  • authentik≥ 2024.10.0-rc1, < 2024.10.3 | < 2024.8.5 | ≥ 2024.10.0, < 2024.10.3

1 vendor · 1 product

References

4 links