CVE-2026-49443

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

State: Published
Severity: 8.8 High
Published: Jun 2, 2026
Updated: Jun 3, 2026
Reserved: May 30, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
authentikgoauthentik	< 2025.12.6Affected < 2026.2.4Affected < 2026.5.1Affected

References

https://github.com/goauthentik/authentik/security/advisories/GHSA-wr38-7xg8-fqxr

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