CVE-2026-88378 Memory corruption in n/a
A heap out-of-bounds write in QuickJS allows attackers to execute arbitrary code or cause 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-2026-88378?
CVE-2026-88378 is a critical memory corruption vulnerability in n/a, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
QuickJS commit 04be24600 contains a heap out-of-bounds write condition in JS_ReadFunctionTag().
Weakness: CWE-787
Which versions are affected by CVE-2026-88378?
How do I fix CVE-2026-88378?
No fix has been published for CVE-2026-88378 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-88378 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88378 exists.
Sources
Also known as DEBIAN-CVE-2026-88378, GHSA-jww9-7qmq-6hv5, UBUNTU-CVE-2026-88378.