• Sublime Core Feed
High Severity

Attachment: Filename containing Unicode right-to-left override character

Description

Recursively identifies attachments that attempt to conceal their true file extension by using right-to-left override characters

@vector_sec
Created Aug 17th, 2023 • Last updated Jan 12th, 2026
Source
type.inbound
and any(attachments,
        regex.icontains(.file_name, '\x{202E}', '\x{202D}')
        or (
          .file_extension in~ $file_extensions_common_archives
          and any(file.explode(.),
                  regex.icontains(.file_name, '\x{202E}', '\x{202D}')
          )
        )
)
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