How broadly exploitable is this vulnerability?

Exploitability depends on deployment: if your applications or proxy rules treat missing or inconsistent `X-Authentik-*` headers as acceptable and do not explicitly deny such requests, an attacker with network access to the protected endpoint may bypass authentication using crafted cookies.

Does an attacker need a valid user account or prior authentication?

Not necessarily. The issue arises from malformed cookie handling and header injection. In many configurations, an attacker only needs network access to the reverse proxy and the ability to send arbitrary HTTP requests with crafted cookies.

What is the safest general fix pattern?

Ensure the entire stack behaves

Severity:

HIGH RISK

(8.6)

Authentication Bypass (CWE-287) in authentik Proxy Provider Forward Authentication

CVE-2026-25748

Published:

Feb 12, 2026

Status:

Undergoing Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Authentication Bypass

CWE:

CWE-287

Impact:

Unauthorized Access / Authentication Bypass

Severity:

HIGH RISK

(8.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Authentication Bypass

CWE:

CWE-287

Impact:

Unauthorized Access / Authentication Bypass

Severity:

HIGH RISK

(8.6)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Authentication Bypass (CWE-287) in authentik Proxy Provider Forward Authentication

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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