CVE-2026-3463 - xlnt-community xlnt Compound Document binary.hpp append heap-based overflow

CVE ID : CVE-2026-3463 Published : March 3, 2026, 12:16 p.m. | 1 hour, 55 minutes ago Description : A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of the component Compound Document Parser. This manipulation causes heap-based buffer overflow. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. Patch name: 147. It is suggested to install a patch to address this issue. Severity: 4.8 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...