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Description

Koodo Reader is an ebook reader. In version 2.3.0 and earlier, Koodo Reader is vulnerable to remote code execution through malicious EPUB files because the open-book IPC handler enables nodeIntegrationInSubFrames and EPUB chapter content is rendered with unsanitized innerHTML. An attacker can craft an EPUB book that, when imported and opened by the victim, instantiates a hidden iframe with Node.js API access and executes arbitrary operating system commands with the victim user's privileges. This issue is fixed in version 2.3.1.

PUBLISHED Reserved 2026-06-16 | Published 2026-07-07 | Updated 2026-07-08 | Assigner GitHub_M




HIGH: 8.4CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-94: Improper Control of Generation of Code ('Code Injection')

Product status

< 2.3.1
affected

References

github.com/...reader/security/advisories/GHSA-mjr7-w4jq-2rq9 exploit

github.com/...reader/security/advisories/GHSA-mjr7-w4jq-2rq9

cve.org (CVE-2026-55408)

nvd.nist.gov (CVE-2026-55408)

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