CVE-2026-43886
HIGH EPSS 11.4%
Published May 11, 20261mo ago · Modified Jun 17, 20262w ago
8.2 CVSS 3.1
Published May 11, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
Description
Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.6.1, a logic error in OAuthInterface.validateScope() uses Array.some() to validate requested OAuth scopes, causing the function to accept the entire scope array if any single scope is valid. An attacker can smuggle the wildcard * scope by requesting scope=read *, escalating a read-only OAuth token to full unrestricted API access including write, delete, and admin operations. This vulnerability is fixed in 1.7.0.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
11.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-269 Improper Privilege Management Authorization
References 1
- github.com https://github.com/outline/outline/security/advisories/GHSA-7732-6qrg-wjf4
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.