What’s Vulnerable › Vulnerabilities

CVE-2026-110637: buildebooks before 0.2.2 OS Command Injection via kindlegen EPUB File Name

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-15
• Weakness: CWE-78

Description

buildebooks before 0.2.2 contains an OS command injection vulnerability in lib/kindle.js that allows attackers to execute commands by supplying a crafted EPUB file name passed to kindlegen via child_process.exec. Attackers can craft a book project with a malicious front-matter filename or project folder name and kindle: true to execute OS commands as the user running buildebooks.

Affected products

• wastemobile buildebooks: before 0.2.2 — fixed in 0.2.2

How to fix

Upgrade to a fixed version: wastemobile buildebooks 0.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/wastemobile/buildebooks
• https://github.com/wastemobile/buildebooks/blob/7fc313485447d9359fb38fda3cbc2ed60ce69fe7/lib/kindle.js#L5-L12
• https://github.com/wastemobile/buildebooks/commit/123776c9ef61e8075ada2f7da2f7046f6a8078d9
• https://github.com/wastemobile/buildebooks/pull/12
• https://www.vulncheck.com/advisories/buildebooks-before-0.2.2-os-command-injection-via-kindlegen-epub-file-name

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