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.

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History

Tue, 18 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 18 Aug 2026 09:30:00 +0000

Type Values Removed Values Added
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.
Title Resource Exhaustion in Carbone
Weaknesses CWE-409
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published:

Updated: 2026-08-18T14:08:58.089Z

Reserved: 2026-08-05T10:48:31.029Z

Link: CVE-2026-18929

cve-icon Vulnrichment

Updated: 2026-08-18T14:08:16.460Z

cve-icon NVD

Status : Received

Published: 2026-08-18T10:16:46.023

Modified: 2026-08-18T15:16:49.990

Link: CVE-2026-18929

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T10:30:10Z

Weaknesses