Vulnerability · Published May 21, 2026 · Assigned by mitre
CVE-2026-36189
Medium 6.2
In plain English
A medium-severity buffer overflow in the uncrustify package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.1%top 97.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | uncrustify | no fix listed | DEBIAN-CVE-2026-36189 |
| Debian:13 | uncrustify | no fix listed | DEBIAN-CVE-2026-36189 |
| Debian:14 | uncrustify | no fix listed | DEBIAN-CVE-2026-36189 |
| Ubuntu:22.04:LTS | uncrustify | no fix listed | UBUNTU-CVE-2026-36189 |
| Ubuntu:24.04:LTS | uncrustify | no fix listed | UBUNTU-CVE-2026-36189 |
| Ubuntu:25.10 | uncrustify | no fix listed | UBUNTU-CVE-2026-36189 |
| Ubuntu:26.04:LTS | uncrustify | no fix listed | UBUNTU-CVE-2026-36189 |
| Ubuntu:26.10 | uncrustify | no fix listed | UBUNTU-CVE-2026-36189 |
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H