{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b4ad95b1bd3d18b23261b7c3496bfbac8ebfe324"
            }
          ],
          "repo": "https://github.com/projectsend/projectsend",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53992.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "last_affected": "b4ad95b"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "ProjectSend r2029 contains a reflected cross-site scripting vulnerability in thumbnails-regenerate.php that allows remote attackers to inject arbitrary HTML and JavaScript by supplying unsanitized values in the start_date and end_date GET parameters, which are echoed unescaped into HTML attribute values. Attackers can craft a malicious URL that, when followed by an authenticated victim with edit_settings permissions, executes injected scripts in the application origin to steal session cookies or perform unauthorized actions including user management, file management, and application settings changes.",
  "id": "CVE-2026-53992",
  "modified": "2026-08-15T04:06:51.248328503Z",
  "published": "2026-08-05T14:54:41.657Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53992.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53992"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/reflected-xss-in-projectsend-thumbnails-regenerate-php-via-start-date-end-date-parameters"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectsend/projectsend/commit/b4ad95b1bd3d18b23261b7c3496bfbac8ebfe324"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/projectsend/projectsend"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Reflected XSS in ProjectSend thumbnails-regenerate.php via start_date / end_date Parameters"
}