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Servers and applications

CVE-2021-32802

Nextcloud server is an open source, self hosted personal cloud. Nextcloud supports rendering image previews for user provided file content. For some image types, the Nextcloud server was invoking a third-party library that wasn't suited for untrusted user-supplied content. There are several security concerns with passing user-generated content to this library, such as…

Severity
Critical 9.8
Published
7 Sept 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
20.0.12, 21.0.4, 22.1.0
Sources
NVD

Affected software

SoftwareAffected versions
NextcloudServers and applications · cpe:a:nextcloud:nextcloud_server
  • Every version before 20.0.12
  • From 21.0.0 before 21.0.4
  • From 22.0.0 before 22.1.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-32802
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-32802