CVE-2021-44026 Roundcube CVE debrief

Who should care

Mail and collaboration administrators, security teams, and IT operators responsible for Roundcube Webmail deployments, especially internet-facing systems.

Technical summary

The supplied corpus identifies CVE-2021-44026 as a SQL injection vulnerability in Roundcube Webmail. CISA added the issue to the Known Exploited Vulnerabilities catalog on 2023-06-22, which indicates it is treated as a known exploited weakness and should be remediated quickly. The vendor reference in the source notes Roundcube security updates 1.4.12 and 1.3.17, released on 2021-11-12, as the relevant fix path. No additional exploit mechanics, proof-of-concept details, or CVSS score are provided in the supplied sources.

Defensive priority

High. CISA KEV inclusion means this vulnerability should be prioritized for rapid remediation, with particular attention to meeting the listed due date of 2023-07-13.

Recommended defensive actions

• Apply the Roundcube security updates referenced by the vendor: 1.4.12 for the 1.4 branch and 1.3.17 for the 1.3 branch, per vendor instructions.
• Inventory all Roundcube Webmail installations and confirm they are on a fixed release.
• Prioritize remediation of any internet-facing or externally reachable Roundcube deployments.
• Review Roundcube and adjacent application logs for unusual activity during the exposure window.
• If immediate patching is not possible, temporarily restrict access to trusted networks until updates are applied.

Evidence notes

The source corpus includes CISA KEV metadata, which lists Roundcube Webmail SQL Injection Vulnerability with dateAdded 2023-06-22 and dueDate 2023-07-13. The vendor note in the corpus links to Roundcube's security update announcement for versions 1.4.12 and 1.3.17 released on 2021-11-12. The corpus also references the CVE record and NVD detail page. No CVSS score or deeper technical exploit details were supplied.

Official resources