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Critical

Security advisory

Type: advisorySources: OSVCVE: CVE-2020-23361

phpList 3.5.3 allows type juggling for login bypass because == is used instead of === for password hashes, which mishandles hashes that begin with 0e followed by exclusively numerical characters.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-23361
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 11:05 UTC · Revision 1

Source evidence

CVE-2020-23361

core-osv · Original source

Published 27 Jan 2021, 16:15 UTC

phpList 3.5.3 allows type juggling for login bypass because == is used instead of === for password hashes, which mishandles hashes that begin with 0e followed by exclusively numerical characters.

osv:CVE-2020-23361
Complete source record
{
  "id": "f477c2eb27b70edf09d180c91c86db4846436d0b71073bcbfb605a1d1ad775c2",
  "url": "https://osv.dev/vulnerability/CVE-2020-23361",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-23361",
    "summary": "phpList 3.5.3 allows type juggling for login bypass because == is used instead of === for password hashes, which mishandles hashes that begin with 0e followed by exclusively numerical characters.",
    "evidence": "osv:CVE-2020-23361",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-23361",
      "aliases": [
        "BIT-phplist-2020-23361",
        "CVE-2020-23361"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/phplist/phplist3",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d6fa171f63c0f0846cc9bde9ce948fa0de0e73f6"
                },
                {
                  "last_affected": "d6fa171f63c0f0846cc9bde9ce948fa0de0e73f6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:phplist:phplist:3.5.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.5.3"
                      },
                      {
                        "last_affected": "3.5.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.5.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-23361.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:49.587573600Z",
      "provider": "osv",
      "references": [
        "https://github.com/phpList/phplist3/issues/668"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-23361",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383890,
  "published_at": "2021-01-27T16:15:13.123+00:00"
}