Vulnerability Description
Carbone is vulnerable to Denial of Service due to lack of protection against zip bombs when processing .docx files. The library uses yazl for zip decompression without validating entry sizes, allowing an attacker to supply a malicious .docx file containing a zip bomb that decompresses to a significantly larger size, causing excessive memory consumption and crashing the application server. The issue was fixed in versions: 3.8.2, 4.26.3 and 5.4.4. The fix is available across all distribution types.
Related Weaknesses (CWE)
References
- https://carbone.io/
- https://cert.pl/en/posts/2026/08/CVE-2026-18929
- https://github.com/carboneio/carbone/commit/eb9b4cff992cc1cb1a319d7fc0cbd09160dc
FAQ
What is CVE-2026-18929?
CVE-2026-18929 is a documented vulnerability. Carbone is vulnerable to Denial of Service due to lack of protection against zip bombs when processing .docx files. The library uses yazl for zip decompression without validating entry sizes, allowing...
How severe is CVE-2026-18929?
CVSS scoring is not yet available for CVE-2026-18929. Check NVD for updates.
Is there a patch for CVE-2026-18929?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.