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GHSA-mmg4-322v-6jvcmedium5.4

Laravel Backpack CRUD: Stored XSS in the color column — the `@if($column['escaped'])` branches are inverted

Impact

The Blade template for the color column type (src/resources/views/crud/columns/color.blade.php) has its escaped/unescaped rendering branches inverted relative to every other column template in the library. Because $column['escaped'] defaults to true, values stored in color columns are rendered unescaped by default, enabling Stored XSS if column values are not validated before storage.

Source excerpt · OSV
Applies when

Exploitability requires the ability to write an unsanitized value into a color-typed column.

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

backpack/crud Packagist
Affected rangeRecorded fix
From 6.0.0 before 6.8.14Ecosystem versions6.8.14
From 7.0.0 before 7.0.38Ecosystem versions7.0.38

Version evidence: OSV · GHSA-mmg4-322v-6jvc

View original version evidence (158 explicit versions)

Original source description

Summary

The Blade template for the color column type (src/resources/views/crud/columns/color.blade.php) has its escaped/unescaped rendering branches inverted relative to every other column template in the library. Because $column['escaped'] defaults to true, values stored in color columns are rendered unescaped by default, enabling Stored XSS if column values are not validated before storage.

Details

All other column templates in src/resources/views/crud/columns/ follow the convention:

  • $column['escaped'] == true → {{ $column['text'] }} (HTML-escaped)
  • $column['escaped'] == false → {!! $column['text'] !!} (raw)

The color template has these branches swapped. An attacker who can write an arbitrary string to a color-typed column can inject JavaScript that executes in the browser of any user who views the list — including administrators — with access to their session cookies and CSRF tokens.

Impact

Stored XSS with scope change (attacker context runs in victim's browser). Highest-risk target is an administrator viewing the list view. Exploitability requires the ability to write an unsanitized value into a color-typed column.

Patches

Fixed in 6.8.14 and 7.0.38 by correcting the branch order in color.blade.php. See PR #5992.

Workarounds

Validate stored color values against a strict CSS color grammar (e.g. /^#[0-9a-fA-F]{3,6}$/) at the model layer before data reaches the view.

Credits

Reported by Vishal Shukla (@shukla304) via sechub.dev.

References