Vulnerability details
CVE-2026-55408
koodo-reader koodo-reader
Koodo Reader: Remote code execution via malicious epub file
CVSS 4.0
8.4High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.4High | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| koodo-reader | koodo-reader | < 2.3.1 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-07-08
- Last updated
- 2026-07-08
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.24%
Probability of exploitation in 30 days
15.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-94Improper Control of Generation of Code ('Code Injection')