CVE-2023-39955

Notes attachment render HTML in preview mode

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Notes is a note-taking app for Nextcloud, an open-source cloud platform. Starting in version 4.4.0 and prior to version 4.8.0, when creating a note file with HTML, the content is rendered in the preview instead of the file being offered to download. Nextcloud Notes app version 4.8.0 contains a patch for the issue. No known workarounds are available.

Notes es una aplicación de toma de notas para Nextcloud, una plataforma en la nube de código abierto. A partir de la versión 4.4.0 y antes de la versión 4.8.0, al crear un archivo de notas con HTML, el contenido se muestra en la vista previa en lugar de ofrecer el archivo para descargar. La versión 4.8.0 de la aplicación Nextcloud Notes contiene un parche para este problema. No se conocen soluciones disponibles.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-08-07 CVE Reserved
2023-08-10 CVE Published
2024-09-11 EPSS Updated
2024-10-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (3)

URL	Tag	Source
https://hackerone.com/reports/1924355	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/notes/pull/1031	2023-08-16
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6g88-37x7-4vw6	2023-08-16

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nextcloud Search vendor "Nextcloud"		Notes Search vendor "Nextcloud" for product "Notes"				>= 4.4.0 < 4.8.0 Search vendor "Nextcloud" for product "Notes" and version " >= 4.4.0 < 4.8.0"		nextcloud		Affected