CVE-2026-56405
6.9
MEDIUM
CVSS 3.1
EPSS 0.10%
Description
libexpat before 2.8.2 has an integer overflow in getAttributeId.
How to fix CVE-2026-56405
To remediate CVE-2026-56405, upgrade the affected package to a fixed version below.
- Alpine/expat—upgrade to 2.8.2-r0 or later
- Debian/expat—no fix listed
Is CVE-2026-56405 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.8.2-r0
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L |