CVE-2026-49443

HIGH

authentik: `UserSourceConnection.user` and `GroupSourceConnection.group` are changeable through the API

Title source: cna
STIX 2.1

Description

authentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, an attacker with the ability to change a source connection, and an account in one of the configured sources can log into any account. This issue has been patched in versions 2025.12.6, 2026.2.4, and 2026.5.1.

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.0025
EPSS Percentile 16.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-287
Status published
Products (3)
goauthentik/authentik < 2025.12.6 (2 CPE variants)
goauthentik/authentik < 2026.2.4
goauthentik/authentik < 2026.5.1
Published Jun 02, 2026
Tracked Since Jun 03, 2026