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Medium

Security advisory

Type: advisorySources: OSVCVE: CVE-2021-32806

Products.isurlinportal is a replacement for isURLInPortal method in Plone. Versions of Products.isurlinportal prior to 1.2.0 have an Open Redirect vulnerability. Various parts of Plone use the 'is url in portal' check for security, mostly to see if it is safe to redirect to a url. A url like `https://example.org` is not in the portal. The url `https:example.org` without slashes is considered to be in the portal. When redirecting, some browsers go to `https://example.org`, others give an error. Attackers may use this to redirect victims to their site, especially as part of a phishing attack. The problem has been patched in Products.isurlinportal 1.2.0.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2021-32806
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 11:48 UTC · Revision 1

Source evidence

CVE-2021-32806

core-osv · Original source

Published 2 Aug 2021, 19:15 UTC

Products.isurlinportal is a replacement for isURLInPortal method in Plone. Versions of Products.isurlinportal prior to 1.2.0 have an Open Redirect vulnerability. Various parts of Plone use the 'is url in portal' check for security, mostly to see if it is safe to redirect to a url. A url like `https://example.org` is not in the portal. The url `https:example.org` without slashes is considered to be in the portal. When redirecting, some browsers go to `https://example.org`, others give an error. Attackers may use this to redirect victims to their site, especially as part of a phishing attack. The problem has been patched in Products.isurlinportal 1.2.0.

osv:CVE-2021-32806
Complete source record
{
  "id": "1d21de6e253a2fb66e41932381a1c777798f30c95137ca3f486c6ac0abad67b4",
  "url": "https://osv.dev/vulnerability/CVE-2021-32806",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-32806",
    "summary": "Products.isurlinportal is a replacement for isURLInPortal method in Plone. Versions of Products.isurlinportal prior to 1.2.0 have an Open Redirect vulnerability. Various parts of Plone use the 'is url in portal' check for security, mostly to see if it is safe to redirect to a url. A url like `https://example.org` is not in the portal. The url `https:example.org` without slashes is considered to be in the portal. When redirecting, some browsers go to `https://example.org`, others give an error. Attackers may use this to redirect victims to their site, especially as part of a phishing attack. The problem has been patched in Products.isurlinportal 1.2.0.",
    "evidence": "osv:CVE-2021-32806",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-32806",
      "aliases": [
        "CVE-2021-32806",
        "GHSA-q3m9-9fj2-mfwr",
        "PYSEC-2021-323"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/plone/products.isurlinportal",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1cea43bd1dd2a26abdc5929aa822d902cec7c370"
                },
                {
                  "fixed": "d4fd34990d18adf05a10dc5e2bb4b066798280ba"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:plone:isurlinportal:*:*:*:*:*:plone:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d4fd34990d18adf05a10dc5e2bb4b066798280ba"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.1.1",
            "1.1.0",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32806.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:43.947200843Z",
      "provider": "osv",
      "references": [
        "https://github.com/plone/Products.isurlinportal/security/advisories/GHSA-q3m9-9fj2-mfwr",
        "https://github.com/plone/Products.isurlinportal/commit/d4fd34990d18adf05a10dc5e2bb4b066798280ba"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-32806",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386029,
  "published_at": "2021-08-02T19:15:08.133+00:00"
}