CVE-2026-2703 - xlnt-community xlnt Encrypted XLSX File base64.cpp decode_base64 off-by-one

CVE ID : CVE-2026-2703 Published : Feb. 19, 2026, 4:02 a.m. | 13 minutes ago Description : 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. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...