buildebooks OS Command Injection via kindlegen EPUB File Name
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
buildebooks before 0.2.2 contains an OS command injection flaw in lib/kindle.js. The kindlegen EPUB file name is passed to child_process.exec without neutralization, so a crafted book project with a malicious front-matter filename or project folder name and kindle: true can run OS commands as the user running buildebooks. CISA's SSVC rates technical impact as total, while automatability is no and no exploitation is recorded; CVSS 4.0 scores it 8.5 (HIGH).
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| wastemobile | buildebooks | before 0.2.2 | 0.2.2 | Patch available | CNA |
- buildebooks Vendorwastemobile Affected before 0.2.2 Fixed in 0.2.2 Patch available CNA
Remediation
Upgrade buildebooks to version 0.2.2 or later, which fixes the issue. The weakness is classified as CWE-78.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA buildebooks (wastemobile) Fixed in 0.2.2
Timeline
- 2026-10-14 Threatist record created from CVE-2026-110637
- 2026-10-14 Alias added: GHSA-xq9r-4xcp-j7fm
- 2026-10-15 CISA SSVC decision points changed
- 2026-10-15 Priority changed: MEDIUM → LOW
- 2026-10-16 Priority changed: LOW → MEDIUM
References
Patch 2
Sources
- CVE-2026-110637 · CVE Program
- CVE-2026-110637 · NVD
- FIRST EPSS
- GHSA-xq9r-4xcp-j7fm · GitHub Advisory Database · CC BY 4.0
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