CVE-2026-109144 wbond certvalidator Certificate Path Builder resource consumption
Remote attackers can cause resource exhaustion in the wbond certvalidator library via the Certificate Path Builder, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109144?
CVE-2026-109144 is a medium-severity denial of service vulnerability in wbond certvalidator, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in wbond certvalidator up to 0.11.1. This issue affects some unknown processing of the component Certificate Path Builder. Such manipulation leads to resource consumption. The attack can be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-109144?
How do I fix CVE-2026-109144?
No fix has been published for CVE-2026-109144 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-109144 being exploited?
There is no known exploitation of CVE-2026-109144 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-109144, GHSA-cf2m-vhjm-x2qm, UBUNTU-CVE-2026-109144.