Riskcovery

CVE-2021-32733

XSS in Nextcloud Text application

State
Published
Severity
4.8 Medium
Published
Jul 12, 2021
Updated
Aug 3, 2024
Reserved
May 12, 2021

Read the record on cve.org

Description

Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scripting vulnerability is present in versions prior to 19.0.13, 20.0.11, and 21.0.3. The Nextcloud Text application shipped with Nextcloud server used a `text/html` Content-Type when serving files to users. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, use a browser that has support for Content-Security-Policy.

Scores

CVSSScoreVectorSource
3.14.8 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:NGitHub_M

Weaknesses

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

Affected Products

ProductVersions
security-advisoriesnextcloud
  • < 19.0.13Affected
  • >= 20.0.0, < 20.0.11Affected
  • >= 21.0.0, < 21.0.3Affected

References

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