CVE-2024-21637 json
XSS in Authentik via JavaScript-URI as Redirect URI and form_post Response Mode
published 2024-01-11 2 y ago modified 2026-09-10 59 d ago also BIT-authentik-2024-21637 , EUVD-2024-19275 , GHSA-rjpr-7w8c-gv3j
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami authentik 2023.8.6, 2023.10.6
- goauthentik authentik 2023.8.6, 2023.10.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 7.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | authentik | >=2023.8.0, <2023.8.6 >=2023.10.0, <2023.10.6 |
2023.8.6 2023.10.6 |
Affected products
- goauthentik authentik
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/goauthentik/authentik/releases/tag/version%2F2023.10.6
patch
-
github.com
/goauthentik/authentik/releases/tag/version%2F2023.8.6
patch
-
github.com
/goauthentik/authentik/security/advisories/GHSA-rjpr-7w8c-gv3j
mitigation, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2024-21637
web
Sources
- CVE List CVE-2024-21637
- NVD CVE-2024-21637
- OSV BIT-authentik-2024-21637
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