Reflected XSS in ProjectSend thumbnails-regenerate.php via start_date / end_date Parameters

{
  "id": "e0e1198d430acc3ad003733f99809beb74260f7ab613932029fdf1c7ac6ba324",
  "url": "https://osv.dev/vulnerability/CVE-2026-53992",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Reflected XSS in ProjectSend thumbnails-regenerate.php via start_date / end_date Parameters",
    "summary": "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.",
    "evidence": "osv:CVE-2026-53992",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-53992",
      "aliases": [
        "CVE-2026-53992"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/projectsend/projectsend",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b4ad95b1bd3d18b23261b7c3496bfbac8ebfe324"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "b4ad95b1bd3d18b23261b7c3496bfbac8ebfe324"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "r2029",
            "r2002",
            "r1994",
            "r1945",
            "r1720",
            "r1605",
            "r1584",
            "r1420",
            "Stable",
            "r1415",
            "r1335",
            "r1070",
            "r1053",
            "r756",
            "r754",
            "r753",
            "r559"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53992.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.970541276Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53992.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53992",
        "https://www.vulncheck.com/advisories/reflected-xss-in-projectsend-thumbnails-regenerate-php-via-start-date-end-date-parameters",
        "https://github.com/projectsend/projectsend/commit/b4ad95b1bd3d18b23261b7c3496bfbac8ebfe324",
        "https://github.com/projectsend/projectsend"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "VulnCheck",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "b4ad95b"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53992.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53992",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518434,
  "published_at": "2026-08-05T14:54:41.657+00:00"
}