What is the CVSS score of CVE-2026-25062?

CVE-2026-25062 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Outline are affected by CVE-2026-25062?

Organizations using Outline should be aware of moderate risk from CVE-2026-25062, a path traversal vulnerability rated CVSS 5.5. This could allow unauthorized file access.

Is there a public PoC exploit available for CVE-2026-25062?

Yes, a public proof-of-concept exploit is available for CVE-2026-25062. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-25062?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review file handling controls.

Outline CVE-2026-25062

MEDIUM

Path Traversal (CWE-22)

2026-02-11 security-advisories@github.com

Path Traversal Outline

5.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.5 MEDIUM

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 20, 2026 - 18:10 vuln.today

Public exploit code

CVE Published

Feb 11, 2026 - 21:16 nvd

MEDIUM 5.5

DescriptionGitHub Advisory

Outline is a service that allows for collaborative documentation. Prior to 1.4.0, during the JSON import process, the value of attachments[].key from the imported JSON is passed directly to path.join(rootPath, node.key) and then read using fs.readFile without validation. By embedding path traversal sequences such as ../ or absolute paths, an attacker can read arbitrary files on the server and import them as attachments. This vulnerability is fixed in 1.4.0.

AnalysisAI

Outline versions prior to 1.4.0 fail to validate attachment file paths during JSON import, allowing authenticated attackers with high privileges to traverse the directory structure and read arbitrary files from the server. Public exploit code exists for this path traversal vulnerability, and no patch is currently available for affected deployments.

Technical ContextAI

Classified as CWE-22 (Path Traversal). Affects Outline. Outline is a service that allows for collaborative documentation. Prior to 1.4.0, during the JSON import process, the value of attachments[].key from the imported JSON is passed directly to path.join(rootPath, node.key) and then read using fs.readFile without validation. By embedding path traversal sequences such as ../ or absolute paths, an attacker can read arbitrary files on the server and import them as attachments. This vulnerability is fixed in 1.4.0.