CVE-2025-58351

MEDIUM EPSS 27.2%
Published Sep 3, 202510mo ago · Modified Jun 17, 20261w ago
6.8 CVSS 3.1
Medium
Find Similar
Published Sep 3, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

Outline is a service that allows for collaborative documentation. In versions 0.72.0 through 0.83.0, Outline introduced a feature which facilitates local file system storage capabilities as an optional file storage strategy. This feature allowed a CSP bypass as well as a ContentType bypass that might facilitate further attacks. In the case of self-hosting and using Outline FILE_STORAGE=local on the same domain as the Outline application, a malicious payload can be uploaded as a file attachment and bypass those CSP restrictions, allowing script execution within the context of another user. This is fixed in version 0.84.0.

CVSS Details

Base Score
6.8
Exploitability
2.3
Impact
4.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
27.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
getoutlineoutline*≥0.72.0  –  <0.84.0

References 3

  • github.com https://github.com/outline/outline/commit/18bc93c9c207329244c6909606a2393e863892a3
    Patch
  • github.com https://github.com/outline/outline/releases/tag/v0.84.0
    Release Notes
  • github.com https://github.com/outline/outline/security/advisories/GHSA-gcj7-c9jv-fhgf
    Vendor Advisory

Remediation

  • github.com https://github.com/outline/outline/commit/18bc93c9c207329244c6909606a2393e863892a3
    Patch