CVE-2026-18929Resource Exhaustion in Carbone
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.9 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-409
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- CERT-PL
- NVD analysis
- Deferred
- Record last updated
- Aug 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Carbone Carbone carbone:carbone (from the name) | before 3.8.2; before 4.26.3; before 5.4.4 | CNA record |
References
- https://cert.pl/en/posts/2026/08/CVE-2026-18929third-party-advisory
- https://carbone.io/product
- https://github.com/carboneio/carbone/commit/eb9b4cff992cc1cb1a319d7fc0cbd09160dc214epatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.