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CVE-2026-42849

nvd nist
Published: Jun 2, 2026Modified: Jul 22, 2026

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9.3
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Exploitability: 2.8 / Impact: 5.8
Source: security-advisories@github.com (Secondary)

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.

Affected (2)

Goauthentik
1 product
Authentik
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Goauthentik
Authentik
Before 2025.12.5
Authentik
From 2026.2.0 to 2026.2.3

Related CWEs

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (1)

Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.