Advisory 2021-05/3 Security Issues in Apache Solr 8.8.1

Potential Threat of Unauthorized Access in FileCloud

Security Advisory DateMay 18, 2021
Vulnerability TypePotential unauthorized access
Versions affectedFileCloud Version 20.3.3
Version fixedFileCloud Version


The Apache Solr version included in FileCloud on-premises installations contained security vulnerabilities of high severity. These flaws potentially allowed attackers to gain unauthorized access to secure information or to perform malicious actions.

See the descriptions of the following CVEs at for information about the specific Apache Solr issues causing these threats:

  • CVE-2021-27905
  • CVE-2021-29262
  • CVE-2021-29943


This has been fixed in FileCloud version, which includes the updated version of Apache Solr, 8.8.2.

What you should do

  • If you are using a FileCloud on-premises installation, please update it to the latest version, which is or greater.
  • If you are using FileCloud online, you are not affected.

If you have any questions about this advisory, please contact FileCloud support