How severe is CVE-2024-23647?

CVE-2024-23647 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-23647 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-23647?

CVE-2024-23647 affects Goauthentik Authentik. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-23647?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-23647 have an EU (EUVD) identifier?

Yes. CVE-2024-23647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0389.

When was CVE-2024-23647 published?

CVE-2024-23647 was published on 2024-01-30 and last updated on 2026-06-17.

CVE-2024-23647

CVE-2024-23647 is a medium-severity vulnerability in Goauthentik Authentik with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0389
Weakness: CWE-287
Affected product: Goauthentik Authentik
Published: 2024-01-30
Last modified: 2026-06-17

Description

Authentik is an open-source Identity Provider. There is a bug in our implementation of PKCE that allows an attacker to circumvent the protection that PKCE offers. PKCE adds the code_challenge parameter to the authorization request and adds the code_verifier parameter to the token request. Prior to 2023.8.7 and 2023.10.7, a downgrade scenario is possible: if the attacker removes the code_challenge parameter from the authorization request, authentik will not do the PKCE check. Because of this bug, an attacker can circumvent the protection PKCE offers, such as CSRF attacks and code injection attacks. Versions 2023.8.7 and 2023.10.7 fix the issue.

Frequently asked questions

What is CVE-2024-23647?: Authentik is an open-source Identity Provider. There is a bug in our implementation of PKCE that allows an attacker to circumvent the protection that PKCE offers. PKCE adds the code_challenge parameter to the authorization request and adds the code_verifier parameter to the token request. Prior to 2023.8.7 and 2023.10.7, a downgrade scenario is possible: if the attacker removes the code_challenge parameter from the authorization request, authentik will not do the PKCE check. Because of this bug, an attacker can circumvent the protection PKCE offers, such as CSRF attacks and code injection attacks. Versions 2023.8.7 and 2023.10.7 fix the issue.
How severe is CVE-2024-23647?: CVE-2024-23647 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-23647 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-23647?: CVE-2024-23647 affects Goauthentik Authentik. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-23647?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-23647 have an EU (EUVD) identifier?: Yes. CVE-2024-23647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0389.
When was CVE-2024-23647 published?: CVE-2024-23647 was published on 2024-01-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*

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