CVE-2024-21637

mediumpriority · track · 22EPSS 0.005 · 46 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.55% (46th) EPSS

CVSS 5.4 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.7

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v3.17.7highCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.6highCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 1 · impact 6

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79US

affected products (7)

Products and version ranges known to be affected.

goauthentik authentikall versionsenisa_euvdEU
goauthentik authentik≤ ≤ 2023.10.5enisa_euvdEU
goauthentik authentik≤ ≤ 2023.8.5enisa_euvdEU
goauthentik authentik2023.10.0 → 2023.10.6nvdUScpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
goauthentik authentik2023.8.0 → 2023.8.6nvdUScpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
Bitnami authentik2023.10.0 → 2023.10.6osvUSpkg:bitnami/authentik
Bitnami authentik2023.8.0 → 2023.8.6osvUSpkg:bitnami/authentik

advisories (1)

Vendor and ecosystem advisories describing this.

BIT-authentik-2024-21637XSS in Authentik via JavaScript-URI as Redirect URI and form_post Response Mode2026-04-16vendor · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2024-01-11modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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