CVE-2026-110715 MuJS 1.3.6 before 1.3.9 Heap Out-of-Bounds Read/Write via Array.prototype.sort
Attackers can corrupt memory and potentially execute code or crash the process by exploiting a heap out-of-bounds read/write in MuJS Array.prototype.sort.
- 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-2026-110715?
CVE-2026-110715 is a medium-severity memory corruption vulnerability in Artifex Software MuJS, published on 14 Oct 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
MuJS 1.3.6 before 1.3.9 contains a heap out-of-bounds read and write vulnerability in Array.prototype.sort that allows attackers to corrupt memory by inflating a simple array's length. Attackers can supply JavaScript that enlarges a dense array's length and calls sort, causing Ap_sort_cmp and Ap_sort_swap to access slots past the buffer and crash the process.
Weakness: CWE-787
Which versions are affected by CVE-2026-110715?
How do I fix CVE-2026-110715?
No fix has been published for CVE-2026-110715 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-2026-110715 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110715 exists.
Sources
Also known as DEBIAN-CVE-2026-110715, GHSA-45w2-9pc7-5crm, UBUNTU-CVE-2026-110715.