🛡️ CVE-2026-42849
🔴 CVSS 9.5 — Critical ✅ No Known Exploit NVD
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, due to the implementation of stages in the SFE (Simple Flow Executor) in order to make the interface more compatible with legacy browsers, it was possible to use an XSS exploit in the AutosubmitStage. This issue has been patched in versions 2025.12.5 and 2026.2.3.

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-06-05
Updated 2026-06-15
Modified 2026-06-05
Fix URL N/A

Affected Packages

Software From version Fixed in
authentik
unknown

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