CVE-2023-48302CWE-79

Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V

Low · published November 21, 2023

CVSS v3.1
3.5
EPSS
1%
Percentile
46.5
In the wild
Unconfirmed
What it is

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and Nextcloud Enterprise Server, when a user is tricked into copy pasting HTML code without markup (Ctrl+Shift+V) the markup will actually render. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.13, 26.0.8, and 27.1.3 contain a fix for this issue. As a workaround, disable app text.

The record
Technical detail
CVSS v3.1
3.5 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00571 · 46.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2023-11-21T21:53Z
EPSS history
Timeline
  • 21 NOV 21:53Z
    Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V
    cvelistv5