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CVE WatchOct 25, 2026

CVE-2026-56409

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

CVSS

6.5

Medium

EPSS

0.1%

p2

KEV

—

Exploit Today

1

0-100

Published: Jun 21, 2026 · Last modified: Oct 25, 2026 · CWE-190

EPSS · 30d
0.1%EPSS · 30 days0.1%
2026-10-052026-11-02
Technical description

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

Official references
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