fix: add safety check to redirects from external file URL uploads

[JessRynkar]

What

Fixes an uploads related security issue where redirects are able bypass URL validation in external file uploads.

Why

When uploading files via an external URL, HTTP redirects (3xx responses) were automatically followed. This meant an potential attacker could provide a public URL that redirected to internal services, bypassing the security checks that only ran on the initial URL.

How

• Added redirect: 'manual' to safeFetch() to prevent automatic redirect following
• Modified getExternalFile() to manually handle redirects with re-validation at each step
• Limited redirects to maximum of 3x to prevent infinite loops
• Tests added to uploads test suite

Acknowledgement

Big thank you to r3dbrothers1 for the responsible disclosure.

[github-actions]

📦 esbuild Bundle Analysis for payload

This analysis was generated by esbuild-bundle-analyzer. 🤖

Meta File	Out File	Size (raw)	Note
packages/next/meta_index.json	esbuild/index.js	936.98 KB	🆕 Added
packages/payload/meta_index.json	esbuild/index.js	1.32 MB	🆕 Added
packages/payload/meta_shared.json	esbuild/exports/shared.js	168.42 KB	🆕 Added
packages/richtext-lexical/meta_client.json	esbuild/exports/client_optimized/index.js	281.40 KB	🆕 Added
packages/ui/meta_client.json	esbuild/exports/client_optimized/index.js	1.17 MB	🆕 Added
packages/ui/meta_shared.json	esbuild/exports/shared_optimized/index.js	16.32 KB	🆕 Added

Largest paths

These visualization shows top 20 largest paths in the bundle.

Meta file: packages/next/meta_index.json, Out file: esbuild/index.js

Path	Size
../../node_modules	${{\color{Goldenrod}{ ████████████████████▌ }}}$ 82.3%, 766.88 KB
dist/views/Version	${{\color{Goldenrod}{ █▍ }}}$ 5.5%, 51.23 KB
dist/views/Dashboard	${{\color{Goldenrod}{ ▍ }}}$ 1.8%, 16.59 KB
dist/views/Document	${{\color{Goldenrod}{ ▍ }}}$ 1.7%, 16.18 KB
dist/views/List	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 11.28 KB
dist/views/Root	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 9.03 KB
dist/views/Versions	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 6.16 KB
dist/views/API	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 6.08 KB
dist/elements/Nav	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 5.52 KB
dist/views/Account	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 5.46 KB
dist/elements/DocumentHeader	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 4.81 KB
dist/views/Login	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 4.40 KB
dist/views/ForgotPassword	${{\color{Goldenrod}{ }}}$ 0.3%, 3.09 KB
dist/layouts/Root	${{\color{Goldenrod}{ }}}$ 0.3%, 2.91 KB
dist/views/CreateFirstUser	${{\color{Goldenrod}{ }}}$ 0.3%, 2.81 KB
dist/templates/Default	${{\color{Goldenrod}{ }}}$ 0.3%, 2.63 KB
dist/views/BrowseByFolder	${{\color{Goldenrod}{ }}}$ 0.3%, 2.56 KB
dist/views/CollectionFolders	${{\color{Goldenrod}{ }}}$ 0.3%, 2.44 KB
dist/views/ResetPassword	${{\color{Goldenrod}{ }}}$ 0.3%, 2.40 KB
dist/views/Logout	${{\color{Goldenrod}{ }}}$ 0.2%, 1.94 KB
(other)	${{\color{Goldenrod}{ ████▍ }}}$ 17.7%, 165.42 KB

Meta file: packages/payload/meta_index.json, Out file: esbuild/index.js

Path	Size
../../node_modules	${{\color{Goldenrod}{ ████████████████▉ }}}$ 67.8%, 887.18 KB
dist/fields/hooks	${{\color{Goldenrod}{ ▊ }}}$ 3.3%, 43.58 KB
dist/collections/operations	${{\color{Goldenrod}{ ▊ }}}$ 3.0%, 39.75 KB
dist/versions/migrations	${{\color{Goldenrod}{ ▎ }}}$ 1.4%, 18.50 KB
dist/auth/operations	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 15.74 KB
dist/globals/operations	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 13.17 KB
dist/fields/config	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 12.84 KB
dist/queues/operations	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 12.80 KB
dist/utilities/configToJSONSchema.js	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 12.07 KB
dist/fields/validations.js	${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 10.54 KB
dist/bin/generateImportMap	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 8.71 KB
dist/collections/config	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.35 KB
dist/uploads/fetchAPI-multipart	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.74 KB
dist/index.js	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.69 KB
dist/database/migrations	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.54 KB
dist/config/orderable	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 6.83 KB
dist/collections/endpoints	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 6.22 KB
dist/config/sanitize.js	${{\color{Goldenrod}{ }}}$ 0.4%, 5.58 KB
dist/auth/strategies	${{\color{Goldenrod}{ }}}$ 0.4%, 5.50 KB
dist/auth/endpoints	${{\color{Goldenrod}{ }}}$ 0.4%, 5.42 KB
(other)	${{\color{Goldenrod}{ ████████ }}}$ 32.2%, 422.07 KB

Meta file: packages/payload/meta_shared.json, Out file: esbuild/exports/shared.js

Path	Size
../../node_modules	${{\color{Goldenrod}{ ███████████████████▎ }}}$ 77.1%, 127.13 KB
dist/fields/validations.js	${{\color{Goldenrod}{ █▌ }}}$ 6.4%, 10.54 KB
dist/config/orderable	${{\color{Goldenrod}{ ▍ }}}$ 1.9%, 3.13 KB
dist/fields/baseFields	${{\color{Goldenrod}{ ▍ }}}$ 1.7%, 2.79 KB
dist/utilities/deepCopyObject.js	${{\color{Goldenrod}{ ▍ }}}$ 1.5%, 2.54 KB
dist/auth/cookies.js	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 1.55 KB
dist/utilities/flattenTopLevelFields.js	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 1.42 KB
dist/fields/config	${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 1.28 KB
dist/utilities/getVersionsConfig.js	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 1.04 KB
dist/utilities/flattenAllFields.js	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 943 B
dist/folders/utils	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 916 B
dist/utilities/unflatten.js	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 779 B
dist/utilities/sanitizeUserDataForEmail.js	${{\color{Goldenrod}{ }}}$ 0.4%, 713 B
dist/utilities/getFieldPermissions.js	${{\color{Goldenrod}{ }}}$ 0.4%, 651 B
dist/collections/config	${{\color{Goldenrod}{ }}}$ 0.3%, 570 B
dist/bin/generateImportMap	${{\color{Goldenrod}{ }}}$ 0.3%, 561 B
dist/auth/sessions.js	${{\color{Goldenrod}{ }}}$ 0.3%, 525 B
dist/fields/getFieldPaths.js	${{\color{Goldenrod}{ }}}$ 0.3%, 485 B
dist/utilities/getSafeRedirect.js	${{\color{Goldenrod}{ }}}$ 0.3%, 423 B
dist/utilities/deepMerge.js	${{\color{Goldenrod}{ }}}$ 0.3%, 413 B
(other)	${{\color{Goldenrod}{ █████▋ }}}$ 22.9%, 37.68 KB

Meta file: packages/richtext-lexical/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Path	Size
dist/features/blocks	${{\color{Goldenrod}{ ███▏ }}}$ 12.6%, 35.14 KB
dist/lexical/plugins	${{\color{Goldenrod}{ ██▉ }}}$ 11.5%, 32.00 KB
dist/lexical/ui	${{\color{Goldenrod}{ ██▏ }}}$ 8.8%, 24.36 KB
dist/features/experimental_table	${{\color{Goldenrod}{ ██▏ }}}$ 8.5%, 23.70 KB
dist/packages/@lexical	${{\color{Goldenrod}{ █▋ }}}$ 6.8%, 18.99 KB
dist/features/link	${{\color{Goldenrod}{ █▋ }}}$ 6.5%, 18.11 KB
dist/features/toolbars	${{\color{Goldenrod}{ █▌ }}}$ 6.4%, 17.75 KB
dist/features/upload	${{\color{Goldenrod}{ █▎ }}}$ 5.0%, 13.77 KB
dist/features/textState	${{\color{Goldenrod}{ █ }}}$ 4.0%, 11.08 KB
dist/features/relationship	${{\color{Goldenrod}{ ▊ }}}$ 3.2%, 9.03 KB
dist/lexical/utils	${{\color{Goldenrod}{ ▊ }}}$ 3.0%, 8.22 KB
dist/features/debug	${{\color{Goldenrod}{ ▋ }}}$ 2.7%, 7.39 KB
dist/utilities/fieldsDrawer	${{\color{Goldenrod}{ ▋ }}}$ 2.6%, 7.15 KB
dist/features/converters	${{\color{Goldenrod}{ ▋ }}}$ 2.5%, 7.05 KB
dist/lexical/config	${{\color{Goldenrod}{ ▍ }}}$ 1.8%, 5.08 KB
dist/features/lists	${{\color{Goldenrod}{ ▍ }}}$ 1.8%, 5.00 KB
dist/features/format	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 3.46 KB
dist/lexical/LexicalEditor.js	${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 3.17 KB
dist/lexical/theme	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 2.62 KB
dist/features/indent	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 2.50 KB
(other)	${{\color{Goldenrod}{ █████████████████████▊ }}}$ 87.4%, 243.00 KB

Meta file: packages/ui/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Path	Size
../../node_modules	${{\color{Goldenrod}{ ████████████▍ }}}$ 49.7%, 578.70 KB
dist/elements/FolderView	${{\color{Goldenrod}{ ▋ }}}$ 2.5%, 29.29 KB
dist/elements/BulkUpload	${{\color{Goldenrod}{ ▌ }}}$ 2.4%, 27.61 KB
dist/elements/WhereBuilder	${{\color{Goldenrod}{ ▍ }}}$ 1.5%, 17.09 KB
dist/views/Edit	${{\color{Goldenrod}{ ▎ }}}$ 1.4%, 16.74 KB
dist/fields/Relationship	${{\color{Goldenrod}{ ▎ }}}$ 1.4%, 15.79 KB
dist/elements/Table	${{\color{Goldenrod}{ ▎ }}}$ 1.4%, 15.77 KB
dist/forms/Form	${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 15.26 KB
dist/fields/Upload	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 14.20 KB
dist/fields/Blocks	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 13.70 KB
dist/elements/QueryPresets	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 10.32 KB
dist/elements/PublishButton	${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 9.03 KB
dist/providers/Folders	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 8.45 KB
dist/elements/LivePreview	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 8.38 KB
dist/elements/ListHeader	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 7.90 KB
dist/elements/HTMLDiff	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 7.81 KB
dist/fields/Array	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 7.73 KB
dist/views/CollectionFolder	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.38 KB
dist/elements/ReactSelect	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.34 KB
dist/views/List	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 6.99 KB
(other)	${{\color{Goldenrod}{ ████████████▌ }}}$ 50.3%, 586.21 KB

Meta file: packages/ui/meta_shared.json, Out file: esbuild/exports/shared_optimized/index.js

Path	Size
dist/graphics/Logo	${{\color{Goldenrod}{ █████ }}}$ 20.0%, 3.12 KB
../../node_modules	${{\color{Goldenrod}{ ████▎ }}}$ 17.0%, 2.65 KB
dist/graphics/Icon	${{\color{Goldenrod}{ ██▍ }}}$ 9.8%, 1.52 KB
dist/utilities/formatDocTitle	${{\color{Goldenrod}{ ██▏ }}}$ 8.5%, 1.32 KB
dist/providers/TableColumns	${{\color{Goldenrod}{ █▍ }}}$ 5.5%, 862 B
dist/utilities/groupNavItems.js	${{\color{Goldenrod}{ █▎ }}}$ 5.2%, 814 B
dist/utilities/getGlobalData.js	${{\color{Goldenrod}{ █▏ }}}$ 4.9%, 762 B
dist/utilities/api.js	${{\color{Goldenrod}{ █▏ }}}$ 4.8%, 756 B
dist/elements/Translation	${{\color{Goldenrod}{ ▊ }}}$ 3.2%, 493 B
dist/utilities/handleTakeOver.js	${{\color{Goldenrod}{ ▋ }}}$ 2.8%, 440 B
dist/utilities/traverseForLocalizedFields.js	${{\color{Goldenrod}{ ▋ }}}$ 2.6%, 399 B
dist/elements/withMergedProps	${{\color{Goldenrod}{ ▌ }}}$ 2.2%, 339 B
dist/utilities/getVisibleEntities.js	${{\color{Goldenrod}{ ▌ }}}$ 2.1%, 329 B
dist/utilities/getNavGroups.js	${{\color{Goldenrod}{ ▍ }}}$ 1.9%, 301 B
dist/elements/WithServerSideProps	${{\color{Goldenrod}{ ▍ }}}$ 1.5%, 232 B
dist/utilities/handleGoBack.js	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 180 B
dist/fields/mergeFieldStyles.js	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 159 B
dist/utilities/handleBackToDashboard.js	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 152 B
dist/forms/Form	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 147 B
dist/utilities/abortAndIgnore.js	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 146 B
(other)	${{\color{Goldenrod}{ ████████████████████ }}}$ 80.0%, 12.51 KB

Details

Next to the size is how much the size has increased or decreased compared with the base branch of this PR.

• ‼️: Size increased by 20% or more. Special attention should be given to this.
• ⚠️: Size increased in acceptable range (lower than 20%).
• ✅: No change or even downsized.
• 🗑️: The out file is deleted: not found in base branch.
• 🆕: The out file is newly found: will be added to base branch.

[github-actions]

🚀 This is included in version v3.75.0