Outline up to 1.3.x attachments[].key path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Outline up to 1.3.x. This issue affects some unknown processing. Performing a manipulation of the argument attachments[].key results in path traversal. This vulnerability is identified as CVE-2026-25062. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Outline up to 1.3.x. This affects an unknown functionality. The manipulation of the argument attachments[].key with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-25062 since 01/28/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 1.4.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Outline 1.4.0

Timelineinfo

01/28/2026 CVE reserved
02/11/2026 +14 days Advisory disclosed
02/11/2026 +0 days VulDB entry created
02/11/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-7r4f-3wjv-83xf
Status: Confirmed

CVE: CVE-2026-25062 (🔒)
GCVE (CVE): GCVE-0-2026-25062
GCVE (VulDB): GCVE-100-345591

Entryinfo

Created: 02/11/2026 22:35
Changes: 02/11/2026 22:35 (65)
Complete: 🔍
Cache ID: 216::103

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