What is CVE-2026-24901?

CVE-2026-24901 is a high-severity vulnerability in Outline, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-03-17.

How severe is CVE-2026-24901?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Outline

CVE-2026-24901

Outline is a service that allows for collaborative documentation. Prior to 1.4.0, an Insecure Direct Object Reference (IDOR) vulnerability in the document restoration logic allows any team member to unauthorizedly restore, view, and seize…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (15.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Outline — versions < 1.4.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

https://github.com/outline/outline/security/advisories/GHSA-gmr5-43f5-79f5 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-24901?: CVE-2026-24901 is a high-severity vulnerability in Outline, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-03-17.
How severe is CVE-2026-24901?: High severity. CVSS v3 base score is 8.1 out of 10.