Roundcube security advisory (AV26-503) – Update 1

Imported from official source

Cybersecurity Classified by Officially

Serial number: AV26-503
Date: May 25, 2026
Updated: September 21, 2026

On May 24, 2026, Roundcube published security advisories to address vulnerabilities in the following product: 

  • Roundcube Webmail – versions prior to 1.6.16
  • Roundcube Webmail – versions prior to 1.7.1

Update 1

Open-source reporting indicates that CVE-2026-48842 is being exploited in the wild.

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

This is an extract. The publication continues at the source.

Read the original at the source: https://cyber.gc.ca/en/alerts-advisories/roundcube-security-advisory-av26-503

Officially imported this from Canadian Centre for Cyber Security’s own source and shows an extract. If you work there, claiming the profile and verifying the domain lets you choose to show the full text here.

Provenance

Organization
Canadian Centre for Cyber Security — imported from official source
Official source
https://www.cyber.gc.ca/api/cccs/rss/v1/get?feed=alerts_advisories&lang=en ATOM
Imported
September 21, 2026 21:00
Versions
1 recorded
Identity
https://cyber.gc.ca/en/alerts-advisories/roundcube-security-advisory-av26-503

Officially records where a publication came from, not whether it is true. Imported records are reproduced from an organization's own official source.