CVE-2025-70347 Denial of service in n/a
A local attacker can cause a denial of service in the mquickjs library by providing a crafted file to the get_mblock_size function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-70347?
CVE-2025-70347 is a medium-severity denial of service vulnerability in n/a, published on 10 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An issue in mquickjs before commit 74b7e (2026-01-15) allows a local attacker to cause a denial of service via a crafted file to the get_mblock_size function at mquickjs.c.
Weakness: CWE-400
Which versions are affected by CVE-2025-70347?
How do I fix CVE-2025-70347?
No fix has been published for CVE-2025-70347 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-2025-70347 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-70347 exists.
Sources
Also known as GHSA-cq85-vq4v-c3f4.