CVE-2026-36189
Buffer Overflow vulnerability in Uncrustify Project Affected v.Uncrustify_d-0.82.0-132-bcc41cbdc...
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
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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
- Record
CVE-2026-36189- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
EUVDEUVD-2026-31287
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
- Record
EUVD-2026-31287- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-c5x6-jm2x-6vfp
Buffer Overflow vulnerability in Uncrustify Project Affected v.Uncrustify_d-0.82.0-132-bcc41cbdc...
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
- Record
GHSA-c5x6-jm2x-6vfp- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
NVD
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
- Record
CVE-2026-36189- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
OSV
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
- Record
CVE-2026-36189- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-36189
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
- Record
DEBIAN-CVE-2026-36189- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-36189
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
- Record
UBUNTU-CVE-2026-36189- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
uncrustifyDebian:12 |
All versions, plus listed versions 0.72.0+dfsg1-20.78.1+dfsg1-1 |
None known |
uncrustifyDebian:13 |
All versions, plus listed versions 0.78.1+dfsg1-1 |
None known |
uncrustifyDebian:14 |
All versions, plus listed versions 0.78.1+dfsg1-1 |
None known |
uncrustifyUbuntu:16.04:LTS |
All versions, plus listed versions 0.59+dfsg1-1.1 |
None known |
uncrustifyUbuntu:18.04:LTS |
All versions, plus listed versions 0.65+git20170831+dfsg1-10.66.1+dfsg1-1 |
None known |
uncrustifyUbuntu:20.04:LTS |
All versions, plus listed versions 0.69.0+dfsg1-10.69.0+dfsg1-1build1 |
None known |
uncrustifyUbuntu:22.04:LTS |
All versions, plus listed versions 0.72.0+dfsg1-2 |
None known |
uncrustifyUbuntu:24.04:LTS |
All versions, plus listed versions 0.72.0+dfsg1-20.78.1+dfsg1-1 |
None known |
uncrustifyUbuntu:25.10 |
All versions, plus listed versions 0.78.1+dfsg1-1 |
None known |
uncrustifyUbuntu:26.10 |
All versions, plus listed versions 0.78.1+dfsg1-1build1 |
None known |
uncrustifyUbuntu:26.04:LTS |
All versions, plus listed versions 0.78.1+dfsg1-10.78.1+dfsg1-1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-36189 is a medium vulnerability (CVSS 6.2) in uncrustify, published May 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. No source names a fixed version.
References
github.com/uncrustify/uncrustify%2Chttps://github.com/uncrustify/uncrustify/issues/4636%2C
gist.github.com/Criticayon/5da6d6c9cf068e494347c659d01982a9
nvd.nist.gov/vuln/detail/CVE-2026-36189
security-tracker.debian.org/tracker/CVE-2026-36189
ubuntu.com/security/CVE-2026-36189
cve.org/CVERecord?id=CVE-2026-36189