Is this vulnerability remotely exploitable?

Yes, it can be exploited remotely via the web or API interface, but it typically requires a valid user account within the affected Outline instance.

What level of access does an attacker need to take advantage of this issue?

The attacker generally needs at least basic authenticated access to the Outline workspace or organization. From there, they can attempt to invoke membership-related endpoints that are protected by weaker or inconsistent authorization checks.

What is the safest general fix pattern for this type of vulnerability?

The most robust fix is to centralize authorization in shared components and enforce a single, consistent policy for all operations that impact user roles, group memberships, or privileges. Every endpoint that can alter effective permissions should invoke this shared authorization layer rather than implementing bespoke checks.

Severity:

HIGH RISK

(7.6)

Privilege Escalation via Inconsistent Authorization Checks (CWE-269) in Outline Membership Management

CVE-2025-64487

Published:

Feb 11, 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:

Privilege Escalation

CWE:

CWE-269

Impact:

Privilege Escalation and Unauthorized Access

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Privilege Escalation

CWE:

CWE-269

Impact:

Privilege Escalation and Unauthorized Access

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Privilege Escalation via Inconsistent Authorization Checks (CWE-269) in Outline Membership Management

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

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare