CVE-2025-58351: medium-severity vulnerability in outline
Outline's Local File Storage Feature can Cause CSP Bypass
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.4%
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
Affected products
outline · outlineRelated CVEs — outline
In the same product, most dangerous first.
CVE-2026-113611MEDIUMOutline before 1.8.0 Information Disclosure via Orphaned Webhook SubscriptionsEPSS 0.5%CVE-2024-40626HIGHStored Cross-site Scripting (XSS) vulnerability in Outline editorEPSS 0.5%CVE-2026-54573MEDIUMAuthorization Bypass in API Key/OAuth Scopes via Path Parsing DiscrepancyEPSS 0.5%CVE-2026-33640CRITICALOutline has a rate limit bypass that allows brute force of email login OTPEPSS 0.5%CVE-2026-25062MEDIUMOutline Affected an Arbitrary File Read via Path Traversal in JSON ImportEPSS 0.4%CVE-2026-43888HIGHOutline: Zip Extraction Path Escape via PATH_MAX Truncation in Collection ImportEPSS 0.4%