SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-56410

xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId.

MEDIUM 6.9EPSS 0.14%

Does this matter?

Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.

Description

xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId.

CVSS 3.1
6.9 MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
EPSS
0.14% probability · 4th percentile
CISA KEV
Not listed
Weakness
CWE-190
Affected
libexpat project/libexpat
Source
cve@mitre.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.