CVE-2026-2703
xlnt-community xlnt Encrypted XLSX File base64.cpp decode_base64 off-by-one
Summary
xlnt-community xlnt Encrypted XLSX File base64.cpp decode_base64 off-by-one
Original description
The description as published by the source.
A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::decode_base64 of the file source/detail/cryptography/base64.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to off-by-one. The attack requires local access. The exploit has been made available to the public and could be used for attacks. This patch is called f2d7bf494e5c52706843cf7eb9892821bffb0734. Applying a patch is advised to resolve this issue.
References
- advisory github.com
- advisory nvd.nist.gov
- advisory vuldb.com
- advisory vuldb.com
- patch github.com
- report github.com
- report vuldb.com
- report github.com
- web github.com