Quick answers
- Is CVE-2026-41649 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-41649 being exploited in the wild.
- How severe is CVE-2026-41649?
- High severity, with a CVSS score of 7.7, published 28 April 2026.
- Which products and versions are affected?
- Jigsaw Outline >= 0.86.0, < 1.7.0.
- Is there a fix for CVE-2026-41649?
- A patch was published on 2026-04-24: Version 1.7.0 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-41649 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-41649?
- Check whether you run Jigsaw Outline at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An Insecure Direct Object Reference (IDOR) exists in the `shares.create` API endpoint of Outline. The vulnerability is rooted in `server/routes/api/shares/shares.ts`, where a ternary operator in the authorization logic only validates the `collectionId` if both a collection and a `documentId` are provided, effectively skipping the authorization check for the document itself. An authenticated attacker can provide a `collectionId` they own alongside a target `documentId` they do not have access to. The system then generates a valid public share link for the unauthorized document. The attacker can subsequently use the `documents.info` endpoint with the generated share ID to retrieve the full contents of the document, including those in separate workspaces (cross-tenant access). This issue is resolved in version 1.7.0.
Affected products
- Outline Outline >= 0.86.0, < 1.7.0
Timeline
- 2026-04-24: patched: Version 1.7.0 released
- 2026-04-25: advisory: GitHub Security Advisory published
- 2026-04-28: disclosed: CVE published to NVD