CVE-2024-21637: authentik XSS — Fix

Description

Authentik is an open-source Identity Provider. Authentik is a vulnerable to a reflected Cross-Site Scripting vulnerability via JavaScript-URIs in OpenID Connect flows with `response_mode=form_post`. This relatively user could use the described attacks to perform a privilege escalation. This vulnerability has been patched in versions 2023.10.6 and 2023.8.6.

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CVSS v3.1 Score

7.6

HIGH

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
goauthentik	authentik	2023.8.0 — 2023.8.6
goauthentik	authentik	2023.10.0 — 2023.10.6

References

Advisories & Patches

https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.6 https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.6 https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.6 https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.6

Other References

https://github.com/goauthentik/authentik/security/advisories/GHSA-rjpr-7w8c-gv3j https://github.com/goauthentik/authentik/security/advisories/GHSA-rjpr-7w8c-gv3j

Frequently Asked Questions

What is CVE-2024-21637? +

Authentik is an open-source Identity Provider. Authentik is a vulnerable to a reflected Cross-Site Scripting vulnerability via JavaScript-URIs in OpenID Connect flows with `response_mode=form_post`. This relatively user could use the described attacks to perform a privilege escalation. This vulnerability has been patched in versions 2023.10.6 and 2023.8.6. It has a CVSS v3.1 base score of 7.6 (HIGH).

How severe is CVE-2024-21637? +

CVE-2024-21637 has a CVSS v3.1 score of 7.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-21637? +

CVE-2024-21637 affects products from goauthentik, specifically: authentik. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21637? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-21637