CVE-2026-62990 (GCVE-0-2026-62990)

Vulnerability from cvelistv5 – Published: 2026-10-30 21:05 – Updated: 2026-10-30 21:05
VLAI
Title
Shopper: same-origin SVG and HTML uploads enable stored XSS and persistent administrator creation
Summary
Shopper is a Headless e-commerce Admin Panel. In versions from 2.0.0 prior to 2.10.1 and in the 3.0.0 prereleases beta.1 and beta.2, authenticated back-office staff with a content-upload permission can store executable media on the administrator's own origin. In the 2.x implementation, relevant upload permissions include `edit_products` or `add_brands`, and `packages/admin/config/media.php` allows `image/svg+xml` in every media collection, including image fields whose image/* validation also accepts SVG. The product files collection in `packages/admin/src/Livewire/Components/Products/Form/Files.php` has no MIME restriction and accepts `text/html` as well. Media is served inline from the `public` disk under `/storage/` with its own content type, without `Content-Disposition: attachment` or a `Content-Security-Policy`. When an administrator opens an uploaded HTML or SVG file, stored script executes in that administrator's session. In 2.x, the script can invoke `packages/admin/src/Livewire/SlideOvers/CreateTeamMember.php`, whose `store()` checks `access_setting` held by the viewing administrator but trusts client-supplied `role_id`, to create a new attacker-controlled administrator with a chosen password. This account persists after the uploaded file is deleted and gives access to customer data, orders, settings, and user/role management; the same script can exfiltrate data or grant permissions to the attacker's account. Direct account creation by the low-privileged uploader is blocked, so exploitation requires the administrator to open the file. The 3.x prerelease line already excludes SVG but still allows executable product files. This issue is fixed in versions 2.10.1 and 3.0.0-beta.3.
Severity
8.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-269 - Improper Privilege Management
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8129 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
shopperlabs shopper Affected: >= 2.0.0, < 2.10.1
Affected: >= 3.0.0-beta.1, < 3.0.0-beta.3
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "shopper",
          "vendor": "shopperlabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 2.10.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0-beta.1, \u003c 3.0.0-beta.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Shopper is a Headless e-commerce Admin Panel. In versions from 2.0.0 prior to 2.10.1 and in the 3.0.0 prereleases beta.1 and beta.2, authenticated back-office staff with a content-upload permission can store executable media on the administrator\u0027s own origin. In the 2.x implementation, relevant upload permissions include `edit_products` or `add_brands`, and `packages/admin/config/media.php` allows `image/svg+xml` in every media collection, including image fields whose image/* validation also accepts SVG. The product files collection in `packages/admin/src/Livewire/Components/Products/Form/Files.php` has no MIME restriction and accepts `text/html` as well. Media is served inline from the `public` disk under `/storage/` with its own content type, without `Content-Disposition: attachment` or a `Content-Security-Policy`. When an administrator opens an uploaded HTML or SVG file, stored script executes in that administrator\u0027s session. In 2.x, the script can invoke `packages/admin/src/Livewire/SlideOvers/CreateTeamMember.php`, whose `store()` checks `access_setting` held by the viewing administrator but trusts client-supplied `role_id`, to create a new attacker-controlled administrator with a chosen password. This account persists after the uploaded file is deleted and gives access to customer data, orders, settings, and user/role management; the same script can exfiltrate data or grant permissions to the attacker\u0027s account. Direct account creation by the low-privileged uploader is blocked, so exploitation requires the administrator to open the file. The 3.x prerelease line already excludes SVG but still allows executable product files. This issue is fixed in versions 2.10.1 and 3.0.0-beta.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T21:05:51.880Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/shopperlabs/shopper/security/advisories/GHSA-vmvv-x5cp-2qv6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/shopperlabs/shopper/security/advisories/GHSA-vmvv-x5cp-2qv6"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/pull/595",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/pull/595"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/pull/597",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/pull/597"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/commit/12be681db5f603a364d5f03f1974ff2a20e99b99",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/commit/12be681db5f603a364d5f03f1974ff2a20e99b99"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/commit/ad2c5b9b968ff49c37130c6b9d1dba7f20eebbf6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/commit/ad2c5b9b968ff49c37130c6b9d1dba7f20eebbf6"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/compare/v3.0.0-beta.1...v3.0.0-beta.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/compare/v3.0.0-beta.1...v3.0.0-beta.3"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/releases/tag/v2.10.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/releases/tag/v2.10.1"
        },
        {
          "name": "https://github.com/shopperlabs/shopper/releases/tag/v3.0.0-beta.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/shopperlabs/shopper/releases/tag/v3.0.0-beta.3"
        }
      ],
      "source": {
        "advisory": "GHSA-vmvv-x5cp-2qv6",
        "discovery": "UNKNOWN"
      },
      "title": "Shopper: same-origin SVG and HTML uploads enable stored XSS and persistent administrator creation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-62990",
    "datePublished": "2026-10-30T21:05:51.880Z",
    "dateReserved": "2026-07-14T23:10:57.031Z",
    "dateUpdated": "2026-10-30T21:05:51.880Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "shopper",
                "vendor": "shopperlabs",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 2.0.0, \u003c 2.10.1"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 3.0.0-beta.1, \u003c 3.0.0-beta.3"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Shopper is a Headless e-commerce Admin Panel. In versions from 2.0.0 prior to 2.10.1 and in the 3.0.0 prereleases beta.1 and beta.2, authenticated back-office staff with a content-upload permission can store executable media on the administrator\u0027s own origin. In the 2.x implementation, relevant upload permissions include `edit_products` or `add_brands`, and `packages/admin/config/media.php` allows `image/svg+xml` in every media collection, including image fields whose image/* validation also accepts SVG. The product files collection in `packages/admin/src/Livewire/Components/Products/Form/Files.php` has no MIME restriction and accepts `text/html` as well. Media is served inline from the `public` disk under `/storage/` with its own content type, without `Content-Disposition: attachment` or a `Content-Security-Policy`. When an administrator opens an uploaded HTML or SVG file, stored script executes in that administrator\u0027s session. In 2.x, the script can invoke `packages/admin/src/Livewire/SlideOvers/CreateTeamMember.php`, whose `store()` checks `access_setting` held by the viewing administrator but trusts client-supplied `role_id`, to create a new attacker-controlled administrator with a chosen password. This account persists after the uploaded file is deleted and gives access to customer data, orders, settings, and user/role management; the same script can exfiltrate data or grant permissions to the attacker\u0027s account. Direct account creation by the low-privileged uploader is blocked, so exploitation requires the administrator to open the file. The 3.x prerelease line already excludes SVG but still allows executable product files. This issue is fixed in versions 2.10.1 and 3.0.0-beta.3."
          }
        ],
        "id": "CVE-2026-62990",
        "lastModified": "2026-10-30T21:17:16.157",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.3,
              "impactScore": 5.8,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-30T21:17:16.030",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/commit/12be681db5f603a364d5f03f1974ff2a20e99b99"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/commit/ad2c5b9b968ff49c37130c6b9d1dba7f20eebbf6"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/compare/v3.0.0-beta.1...v3.0.0-beta.3"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/pull/595"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/pull/597"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/releases/tag/v2.10.1"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/releases/tag/v3.0.0-beta.3"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/shopperlabs/shopper/security/advisories/GHSA-vmvv-x5cp-2qv6"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              },
              {
                "lang": "en",
                "value": "CWE-269"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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