CVE-2020-27509: Galaxkey

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to perform an account takeover by intercepting the HTTP Post request when sending an email and injecting a specially crafted XSS payload in the 'subject' field. The payload executes when the recipient logs into their mailbox.

Affected products

• Galaxkey Galaxkey: before 5.6.11.5 (fixed in 5.6.11.5)

Published 2022-06-26. Last modified 2026-07-09.