CVE-2026-56254: Capacitor-Updater

High severity, CVSS 7.0. EPSS: 0.2% chance of exploitation in the next 30 days.

In @capgo/capacitor-updater (Cap-go/capgo) before 12.128.2, the end-to-end encryption scheme distributes the private key to each device that downloads the app. Because the public key can be derived from the private key, an attacker performing a man-in-the-middle attack or compromising the Capgo server can create a validly signed update bundle and cause devices to install an update not produced by the original app maker.

Affected products

• Capacitor-Updater Capacitor-Updater: before 12.128.2 (fixed in 12.128.2)

Published 2026-07-10. Last modified 2026-10-08.