Vulnerability Report

CVE-2023-39955

Title: HTML Rendering in Notes App Preview

XSS

Proof Of Concept

No public PoC currently indexed for CVE-2023-39955.

CWE Category CWE-79
Published Date Aug 10, 2023
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 3.5 CVSS v3.1
Exploit Probability (EPSS)
0.59%

Vulnerability Summary

CVE-2023-39955: 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.

Impacted Vendors

H
hcltech 1
N
nextcloud 1

Reference Links

https://github.com/nextcloud/notes/pull/1031 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6g88-37x7-4vw6 https://hackerone.com/reports/1924355 https://github.com/nextcloud/notes/pull/1031 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6g88-37x7-4vw6 https://hackerone.com/reports/1924355
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.1
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-39955 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Affected Stack

No specific products linked.