{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.0.0"
                  },
                  {
                    "fixed": "10.0.8"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "9.3.11"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "2cde9d980f84cfc3caa1adf3275a0817e1e49bfa"
            },
            {
              "fixed": "863109b2a8649b7724e0e6eb7039fcc3afdbe26c"
            },
            {
              "introduced": "0"
            },
            {
              "fixed": "7438b24ab73fe37f9cfcfef281e8b00337b295f8"
            }
          ],
          "repo": "https://github.com/espocrm/espocrm",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4qv5-q4g7-hp5r"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126306.json"
  },
  "details": "EspoCRM before 9.3.11 and 10.x before 10.0.8 contains a stored cross-site scripting vulnerability that allows low-privileged users to upload crafted SVG images that submit authenticated POST requests to arbitrary backend endpoints. Attackers can trick an administrator into opening the SVG in a separate browser tab and clicking it, performing administrator actions such as elevating the attacker's account to administrator.",
  "id": "CVE-2026-126306",
  "modified": "2026-11-14T02:30:42.623669081Z",
  "published": "2026-11-13T09:36:21.753Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126306.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/espocrm/espocrm/security/advisories/GHSA-4qv5-q4g7-hp5r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126306"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/espocrm-before-10.0.8-stored-xss-via-malicious-svg-attachment"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "EspoCRM before 10.0.8 Stored XSS via Malicious SVG Attachment"
}