SEPTEMBER 19, 2026
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Case File

CVE-2026-56254

HIGH · CVSS 7 EPSS 0.15% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-10 · Last synced 2026-08-09

CyberRota Analysis

AI-Generated

The vulnerability affects the @capgo/capacitor-updater library prior to version 12.128.2, where the end-to-end encryption scheme improperly distributes the private key to devices, allowing an attacker to derive the public key. This flaw enables man-in-the-middle attacks or server compromises, potentially leading to unauthorized updates being installed on devices. Organizations utilizing this library should prioritize patching to mitigate the risk of malicious updates and protect their applications.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-56254
Severity
HIGH
CVSS
7
EPSS
0.15%

Original NVD Description

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.