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CVE-2025-64487

Outline is vulnerable to privilege escalation vulnerability in document sharing

Published: Feb 11, 2026Updated: Feb 20, 2026 Sources: CVE List NVDCWE-269
NVD MITRE
7.6CVSSHIGH
EPSS Score
0.2%
Top 90.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Outline is a service that allows for collaborative documentation. Prior to 1.1.0, a privilege escalation vulnerability exists in the Outline document management system due to inconsistent authorization checks between user and group membership management endpoints. This vulnerability is fixed in 1.1.0.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-269

Affected Products

outlineoutline
SaaS
Enterprise Software / collaboration-groupware
outlinegetoutline
SaaS
Cloud & SaaS / saas-application
outlinecommercialEnterprise Softwareaka outline
getoutlinecommercialCloud & SaaSaka outline, outline service

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/outline/outline/security/advisories/GHSA-c8xf-3j86-7686
github.com
https://github.com/outline/outline/releases/tag/v1.1.0
github.com

Timeline

Published
Feb 11, 2026
Last Updated
Feb 20, 2026
News mentions
1

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