Detections
Analytics
CVE-2026-3463
high
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.
References
https://vuldb.com/?submit.764643
https://vuldb.com/?ctiid.348530
https://github.com/xlnt-community/xlnt/pull/147
https://github.com/xlnt-community/xlnt/issues/138#issuecomment-3868381672
https://github.com/xlnt-community/xlnt/issues/138