CVE-2026-36189 Memory corruption in n/a
A local attacker can cause a denial of service in Uncrustify via a buffer overflow in the check_template function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-36189?
CVE-2026-36189 is a medium-severity memory corruption vulnerability in n/a, published on 21 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Buffer Overflow vulnerability in Uncrustify Project Affected v.Uncrustify_d-0.82.0-132-bcc41cbdc and Fixed in commit 68e67b9a1435a1bb173b106fedb4a4f510972bdc allows a local attacker to cause a denial of service via the check_template.cpp, check_template function, tokenize_cleanup function, uncrustify executable components
Weakness: CWE-120
Which versions are affected by CVE-2026-36189?
How do I fix CVE-2026-36189?
No fix has been published for CVE-2026-36189 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-2026-36189 being exploited?
There is no known exploitation of CVE-2026-36189 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-36189, GHSA-c5x6-jm2x-6vfp, UBUNTU-CVE-2026-36189.