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CVE-2026-24901

Getoutline Outline broken access control

8.1 HIGHPublic exploitEPSS 0.31%
  1. Published17 Mar 2026

Description

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 ownership of deleted drafts belonging to other users, including administrators. By bypassing ownership validation during the restore process, an attacker can access sensitive private information and effectively lock the original owner out of their own content. Version 1.4.0 fixes the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected products

Getoutline Outline< 1.4.0

Remediation

Fixed in
Getoutline Outline≥ 1.4.0

References

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Frequently asked

Is CVE-2026-24901 being actively exploited?

CVE-2026-24901 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.31%.

How severe is CVE-2026-24901?

CVE-2026-24901 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.31% probability of exploitation.

Which products are affected by CVE-2026-24901?

Affected products include Getoutline Outline.

How do I fix CVE-2026-24901?

Upgrade affected software to a fixed version, for example Getoutline Outline 1.4.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-24901 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.