CVE-2026-54573

Outline is a service that allows for collaborative documentation. Prior to 1.8.0, the AuthenticationHelper.canAccess function uses ctx.originalUrl to verify if an API key or OAuth token has the required scopes for a request. It extracts the resource by splitting the URL by / and taking the last segment. However, it fails to strip the URL fragment (#). Because Koa's router uses ctx.path (which strips the fragment) for routing, an attacker can append a fragment containing a permitted path (e.g., #foo/api/documents.info) to a restricted endpoint (e.g., /api/documents.create). The router will route the request to the restricted endpoint, but canAccess will evaluate the permitted path in the fragment, bypassing the API key scope restrictions and allowing privilege escalation. This vulnerability is fixed in 1.8.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/outline/outline/security/advisories/GHSA-5x79-rj4g-qrh8

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-25 17:16

Updated : 2026-06-26 19:16

NVD link : CVE-2026-54573

Mitre link : CVE-2026-54573

CVE.ORG link : CVE-2026-54573

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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