Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks
This report summarizes scanner evidence for carrierwaveuploader/carrierwave, a Ruby project with 8,769 GitHub stars. SynthScan examined 22,266 lines of code across 106 source files, recording 127 pattern matches distributed across 8 syntactic categories. The legacy adjusted pattern signal is 6.4 (Moderate pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Can maintainers explain intent, assumptions, and trade-offs? 122 finding(s).
Are imports declared and package/API names verified? 5 finding(s).
Are wrappers, guards, and repeated structures necessary? 8 finding(s).
Which changes need focused human review? 127 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 127 distinct pattern matches across 8 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | lib/carrierwave/mount.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/mount.rb | 21 | @uploaders ||= superclass.respond_to?(:uploaders) ? superclass.uploaders.dup : {} | COMMENT |
| LOW | lib/carrierwave/mount.rb | 41 | if uploader_options[column].has_key?(option) | COMMENT |
| LOW | lib/carrierwave/mount.rb | 61 | # | COMMENT |
| LOW | lib/carrierwave/mount.rb | 81 | # | COMMENT |
| LOW | lib/carrierwave/mount.rb | 101 | # | COMMENT |
| LOW | lib/carrierwave/mount.rb | 121 | # class Data | COMMENT |
| LOW | lib/carrierwave/mount.rb | 201 | # PostgreSQL JSON column. You can assign and retrieve files like this: | COMMENT |
| LOW | lib/carrierwave/mount.rb | 221 | # [images] Returns an array of uploaders for each uploaded file | COMMENT |
| LOW | lib/carrierwave/mount.rb | 241 | # [image_download_errors] Returns error objects of files which failed to be downloaded | COMMENT |
| LOW | lib/carrierwave/mount.rb | 261 | # Mounting uploaders on different columns. | COMMENT |
| LOW | lib/carrierwave/sanitized_file.rb | 81 | # Returns the full path to the file. If the file has no path, it will return nil. | COMMENT |
| LOW | lib/carrierwave/sanitized_file.rb | 181 | # Helper to move file to new path. | COMMENT |
| LOW | lib/carrierwave/sanitized_file.rb | 261 | # | COMMENT |
| LOW | lib/carrierwave/uploader.rb | 21 | COMMENT | |
| LOW | lib/carrierwave/compatibility/paperclip.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/compatibility/paperclip.rb | 21 | # | COMMENT |
| LOW | lib/carrierwave/uploader/dimension.rb | 21 | # def width_range | COMMENT |
| LOW | lib/carrierwave/uploader/processing.rb | 21 | # or a list of such methods, or a hash where the key is a method and the value is | COMMENT |
| LOW | lib/carrierwave/uploader/processing.rb | 41 | # | COMMENT |
| LOW | lib/carrierwave/uploader/mountable.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/uploader/mountable.rb | 21 | # | COMMENT |
| LOW | lib/carrierwave/uploader/versions.rb | 41 | def self.enable_processing(value=nil) | COMMENT |
| LOW | lib/carrierwave/uploader/versions.rb | 141 | # === Examples | COMMENT |
| LOW | lib/carrierwave/uploader/versions.rb | 201 | @versions | COMMENT |
| LOW | lib/carrierwave/uploader/versions.rb | 261 | ## | COMMENT |
| LOW | lib/carrierwave/uploader/direct_upload.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/uploader/extension_denylist.rb | 21 | # | COMMENT |
| LOW | lib/carrierwave/uploader/content_type_denylist.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/uploader/extension_allowlist.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/uploader/extension_allowlist.rb | 21 | # | COMMENT |
| LOW | lib/carrierwave/uploader/cache.rb | 61 | # | COMMENT |
| LOW | lib/carrierwave/uploader/cache.rb | 101 | # | COMMENT |
| LOW | lib/carrierwave/uploader/cache.rb | 121 | # | COMMENT |
| LOW | lib/carrierwave/uploader/cache.rb | 181 | # | COMMENT |
| LOW | lib/carrierwave/uploader/cache.rb | 201 | self.cache_id, self.original_filename = cache_name.to_s.split('/', 2) | COMMENT |
| LOW | lib/carrierwave/uploader/proxy.rb | 41 | ## | COMMENT |
| LOW | lib/carrierwave/uploader/proxy.rb | 61 | def temporary_identifier | COMMENT |
| LOW | lib/carrierwave/uploader/proxy.rb | 81 | # [Integer] size of the file | COMMENT |
| LOW | lib/carrierwave/uploader/metadata.rb | 1 | require "active_support/core_ext/hash/keys" | COMMENT |
| LOW | lib/carrierwave/uploader/configuration.rb | 61 | COMMENT | |
| LOW | lib/carrierwave/uploader/configuration.rb | 101 | COMMENT | |
| LOW | lib/carrierwave/uploader/content_type_allowlist.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/uploader/store.rb | 41 | # loaded correctly. | COMMENT |
| LOW | lib/carrierwave/uploader/store.rb | 61 | COMMENT | |
| LOW | lib/carrierwave/uploader/store.rb | 121 | # for the identifier | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 21 | # process :resize_to_fit => [200, 200] | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 41 | # end | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 81 | COMMENT | |
| LOW | lib/carrierwave/processing/vips.rb | 101 | vips! do |builder| | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 121 | width, height = resolve_dimensions(width, height) | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 141 | width, height = resolve_dimensions(width, height) | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 161 | width, height = resolve_dimensions(width, height) | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 181 | # [background (List, nil)] the color of the background as a RGB, like [0, 255, 255], nil indicates transparent | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 221 | # === Returns | COMMENT |
| LOW | lib/carrierwave/processing/vips.rb | 241 | # method will build a "convert" vips command and execute it on the | COMMENT |
| LOW | lib/carrierwave/processing/rmagick.rb | 1 | module CarrierWave | COMMENT |
| LOW | lib/carrierwave/processing/rmagick.rb | 21 | # process :resize_to_fit => [200, 200] | COMMENT |
| LOW | lib/carrierwave/processing/rmagick.rb | 41 | # | COMMENT |
| 45 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | spec/uploader/versions_spec.rb | 221 | # Create a fresh uploader class with a conditional version | COMMENT |
| MEDIUM | lib/carrierwave/compatibility/paperclip.rb | 20 | # This file contains code taken from Paperclip | COMMENT |
| MEDIUM | lib/carrierwave/uploader/versions.rb | 39 | # Define the enable_processing method for versions so they get the | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW⚡ | spec/spec_helper.rb | 82 | def change_locale_and_store_translations(locale, translations, &block) | CODE |
| LOW | spec/spec_helper.rb | 97 | def change_and_enforce_available_locales(locale, available_locales, &block) | CODE |
| LOW | lib/carrierwave/sanitized_file.rb | 328 | def first_declared_content_type(content_type) | CODE |
| LOW | lib/carrierwave/compatibility/paperclip.rb | 98 | def interpolate_paperclip_path(path) | CODE |
| LOW | lib/carrierwave/uploader/store.rb | 197 | def show_warning_when_filename_is_unavailable(_) | CODE |
| LOW | lib/carrierwave/test/matchers.rb | 98 | def have_directory_permissions(expected) | CODE |
| LOW | lib/carrierwave/processing/rmagick.rb | 102 | def resize_to_geometry_string(geometry_string) | CODE |
| LOW | lib/carrierwave/processing/rmagick.rb | 256 | def resize_to_geometry_string(geometry_string) | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW⚡ | spec/spec_helper.rb | 53 | def stub_tempfile(filename, mime_type=nil, fake_name=nil) | CODE |
| LOW⚡ | spec/spec_helper.rb | 58 | allow(tempfile).to receive_messages(:original_filename => fake_name || filename, | CODE |
| LOW⚡ | spec/spec_helper.rb | 65 | def stub_stringio(filename, mime_type=nil, fake_name=nil) | CODE |
| LOW⚡ | spec/spec_helper.rb | 69 | :original_filename => filename || fake_name, | CODE |
| LOW⚡ | spec/spec_helper.rb | 74 | def stub_file(filename, mime_type=nil, fake_name=nil) | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | lib/carrierwave/sanitized_file.rb | 12 | # It's probably needlessly comprehensive and complex. Help is appreciated. | COMMENT |
| LOW | lib/carrierwave/uploader/configuration.rb | 69 | # If no argument is given, it will simply return the currently used storage engine. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | lib/carrierwave/uploader.rb | 35 | # Once you have an uploader you can use it in isolation: | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | lib/carrierwave/storage/fog.rb | 369 | # Check if the file exists on the remote service | COMMENT |
| LOW | lib/carrierwave/storage/fog.rb | 379 | # Write file to service | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | lib/carrierwave/processing/mini_magick.rb | 269 | # NOTE: This method exists mostly for backwards compatibility, you should | COMMENT |