PT-2026-57167 · Capacitor Updater · Capacitor-Updater

Published 2026-07-10 · Updated 2026-07-10 · CVE-2026-56254

NVD

CVSS v3.1

7.0

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

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.

Fix

Weakness Enumeration

CWE-320

Related Identifiers

CVE-2026-56254

Affected Products

Capacitor-Updater

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-56254 · Security Note
• https://github.com/Cap-go/capgo/security/advisories/GHSA-j2f4-4pfc-p8rx · Vendor Advisory
• https://vulncheck.com/advisories/capacitor-updater-end-to-end-encryption-bypass-via-private-key-distribution · Note