vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-18929

Resource Exhaustion in Carbone

MEDIUM
6.9
CVSS Score
Published: August 18, 2026 at 09:11 AM UTC
Updated: August 28, 2026 at 03:42 PM UTC
2 products affected across 2 vendorsCarboneCarbone

Using Carbone by Carbone?

Get instant alerts when new vulnerabilities affect Carbone - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM6.9
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Carbone· Carboneio
85%
All versions
Carbone· Carbone
60%
v < 3.8.2v < 4.26.3v < 5.4.4
Affected range stops below 3.8.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.26.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Third Party Advisory
Source: cverecord
https://cert.pl/en/posts/2026/08/CVE-2026-18929
Product
Source: cverecord
https://carbone.io/
Patch
Source: cverecord
https://github.com/carboneio/carbone/commit/eb9b4cff992cc1cb1a319d7fc0cbd09160dc214e

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.9MEDIUMCERT-PL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-409

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card