Riskcovery

CVE-2023-48302

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

State
Published
Severity
3.5 Low
Published
Nov 21, 2023
Updated
Aug 2, 2024
Reserved
Nov 14, 2023

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.13.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:LGitHub_M

Weaknesses

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

Affected Products

ProductVersions
security-advisoriesnextcloud
  • >= 25.0.0, < 25.0.13Affected
  • >= 26.0.0, < 26.0.8Affected
  • >= 27.0.0, < 27.1.3Affected

References

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