CVE-2026-49448

EUVD-2026-34030
authentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, the Source stage can be bypassed by sending an empty POST. This issue has been patched in versions 2025.12.6, 2026.2.4, and 2026.5.1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 32%
Affected Products (NVD)
VendorProductVersion
goauthentikauthentik
𝑥
< 2025.12.6
goauthentikauthentik
2026.2.0 ≤
𝑥
< 2026.2.4
goauthentikauthentik
2026.5.0 ≤
𝑥
< 2026.5.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/goauthentik/authentik/security/advisories/GHSA-xp7f-xjjx-gwm8
https://github.com/goauthentik/authentik/security/advisories/GHSA-xp7f-xjjx-gwm8