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CVE WatchOct 14, 2026

CVE-2022-23990

Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.

CVSS

7.5

High

EPSS

4.7%

p92

KEV

—

Exploit Today

28

0-100

Published: Jan 26, 2022 · Last modified: Oct 14, 2026 · CWE-190

EPSS · 30d

4.7%EPSS · 30 days4.7%

2026-10-172026-11-13

Technical description

Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.

Official references

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