Products.isurlinportal: Possible open redirect when using more than 2 forward slashes

{
  "id": "b6261dbfb91866169a2d5c9dfbf36f788956d01977eaec562a70e557a3b1b52b",
  "url": "https://osv.dev/vulnerability/CVE-2026-28413",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Products.isurlinportal: Possible open redirect when using more than 2 forward slashes",
    "summary": "Products.isurlinportal is a replacement for isURLInPortal method in Plone. Prior to versions 2.1.0, 3.1.0, and 4.0.0, a url /login?came_from=////evil.example may redirect to an external website after login. This issue has been patched in versions 2.1.0, 3.1.0, and 4.0.0.",
    "evidence": "osv:CVE-2026-28413",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-28413",
      "aliases": [
        "CVE-2026-28413",
        "GHSA-43gx-6gv6-3jcp",
        "PYSEC-2026-112"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/plone/products.isurlinportal",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "832e84dcb996b58d5e699b23bc36c798f93ecc84"
                },
                {
                  "introduced": "ef0918b3a2218c76a9e850e5a78d2630518055ad"
                },
                {
                  "fixed": "062925c0ec96d90a56c3d2654b29654a6cea281e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:plone:isurlinportal:*:*:*:*:*:plone:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:plone:isurlinportal:*:*:*:*:*:plone:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.0.1",
            "3.0.0",
            "2.0.3",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "1.2.1",
            "1.2.0",
            "1.1.1",
            "1.1.0",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28413.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.001171079Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28413.json",
        "https://github.com/plone/Products.isurlinportal/security/advisories/GHSA-43gx-6gv6-3jcp",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-28413"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-601"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28413.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-28413",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514109,
  "published_at": "2026-03-05T20:16:10.098+00:00"
}