Roundcube security advisory (AV26-503) – Update 1

T1Covered by 1 source · first reported by Canadian Centre for Cyber Security at 21 Sept, 20:20 UTC

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…

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Sources

• T1Roundcube security advisory (AV26-503) – Update 1Canadian Centre for Cyber Security21 Sept, 20:20