CVE-2026-56409

xmlwf in libexpat before 2.8.2 has an integer overflow for the output filename when -d outputDir is used.

CVSS 3.1

6.5CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

EPSS

0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-25)

CWE

CWE-190

Published

2026-06-21

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• libexpat_project:libexpat

References

• https://github.com/libexpat/libexpat/pull/1259

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