CVE-2022-31114: Backpack/crud Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-m8xx-3x29-84h8",
  "modified" : "2026-06-03T20:31:29Z",
  "published" : "2026-06-03T20:25:50Z",
  "aliases" : [ "CVE-2022-31114" ],
  "summary" : "backpack/crud is vulnerable to Cross-Site Scripting (XSS)",
  "details" : "### Impact\n\nIt’s a “*moderate*” vulnerability… but being an admin panel, take this seriously. It’s difficult… but an attacker could conduct a targeted phishing campaign, in order to **trick your users or admins to click a malicious link, which under very specific circumstances could give them information... or even admin access**. It’s *unlikely*, but that’s not good enough in admin panels - It should be made *impossible*. That’s why you are bothered with this. \n\n### Patches\n\n\nIf you don’t have custom error views, the views provided by Backpack would output the exception message *without escaping it*, which made an attack possible using Reflected XSS, in some very specific circumstances (that we will not disclose). **To fix those error views in Backpack 4.x and 5.x, please run**:\n\n```bash\ncomposer update backpack/crud\nphp artisan backpack:fix\n```\n\nThe problem has been patched in:\n- v4.0.63\n- v4.1.69\n- v5.0.13\n\n> **IMPORTANT! Running a `composer update` should get you the patched version, but you also need to run `php artisan backpack:fix` afterwards, to patch your published error views, if necessary.**\n\n### Workarounds\n\nAlternatively (if you don’t want to run `composer update`), you can manually look inside your error views in “*resources/views/errors*” and output `e($exception->getMessage())` instead of `$exception->getMessage()`. That’s all there is to the fix, really.\n\n### What the maintainers have done about this\n\nActed as soon as our team found it (last week of March 2022):\n- Pushed patches to 5.x, 4.1 and 4.0;\n- Made it easy to apply the fix to existing projects, using a new `php artisan backpack:fix` command;\n- Kept the specific circumstances a secret; as far as they know, only the maintainer's team knows about the niche case where this exploit is possible;\n- Emailed all our licensed users, to have a chance to fix their projects before it’s public;\n- Sent an email blast to our 25.000+ strong Security Newsletter;\n- Made this public with a blog post and soon a CVE, after our community has had a reasonable chance to fix their projects;\n- Will continue to monitor this and remind paying users to apply this fix if they haven’t;\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [backpack/crud](https://github.com/laravel-backpack/crud)\n* Email us at [hello@backpackforlaravel.com](mailto:hello@backpackforlaravel.com)\n\n---\n\nPS. You can [read this blog post](https://backpackforlaravel.com/articles/news/we-recommend-you-fix-this-vulnerability) for more information.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "backpack/crud"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.0.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "backpack/crud"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.1.0"
      }, {
        "fixed" : "4.1.69"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "backpack/crud"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.0.63"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Laravel-Backpack/CRUD/security/advisories/GHSA-m8xx-3x29-84h8"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-31114"
  }, {
    "type" : "WEB",
    "url" : "https://backpackforlaravel.com/articles/news/we-recommend-you-fix-this-vulnerability"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Laravel-Backpack/CRUD"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-03T20:25:50Z",
    "nvd_published_at" : "2026-06-03T16:16:18Z"
  }
}