CVE-2026-45186
7.5
HIGH
CVSS 3.1
EPSS 0.01%
Description
In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.
How to fix CVE-2026-45186
To remediate CVE-2026-45186, upgrade the affected package to a fixed version below.
- Alpine/expat—upgrade to 2.8.1-r0 or later
- Debian/expat—no fix listed
Is CVE-2026-45186 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.8.1-r0
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |