CVE-2026-55408

unknowncovered by 1 sourcefirst seen 2026-07-07

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.

⚡ Watch CVE-2026-55408

Get an email if CVE-2026-55408 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.

Exploitation outlook

Low exploitation risk0.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2026-55408: Koodo Reader is an ebook reader. In version 2.3.0 and earlier, Koodo Reader is vulnerable to r…nvd · 2026-07-07

External references

NVD record for CVE-2026-55408

CVE.org record

Embed the live status

— this badge updates automatically when the KEV or exploit status changes. How to embed it →

[![CVE-2026-55408 status](https://www.csirts.com/badge/CVE-2026-55408)](https://www.csirts.com/cve/CVE-2026-55408)