CVE Catalog
CVE-2026-56411
MediumCVSS 6.9Exploitation Probability (EPSS)
Low risk0.11%
2th percentile — higher than 2% of all known CVEs
Summary
In libexpat before version 2.8.2, there is an integer overflow in the xmlwf function that can occur when processing NOTATION declarations in endDoctypeDecl.
Risk Assessment
The integer overflow may lead to unexpected application behavior, creating an opportunity for attackers to exploit this vulnerability.
Recommendation
It is recommended to update the libexpat library to version 2.8.2 or later to mitigate this vulnerability.
Original NVD description (English source)
xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.