Pheditor: Hardcoded default password 'admin' with no forced change enables full application compromise

{
  "id": "50d7932b1dba6878b1cd2be4127538af3306f1d5f3b486944c7b6f5a3a7485d0",
  "url": "https://osv.dev/vulnerability/CVE-2026-55579",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Pheditor: Hardcoded default password 'admin' with no forced change enables full application compromise",
    "summary": "Pheditor is a single-file editor and file manager written in PHP. From version 2.0.1 to before version 2.0.6, Pheditor ships with a hardcoded default password admin (SHA-512 hash stored at pheditor.php:11). There is no mechanism to force a password change on first login. Any deployment using the default credentials grants an attacker full access to the file editor, file upload, and terminal features, enabling arbitrary file read/write and remote code execution. This issue has been patched in version 2.0.6.",
    "evidence": "osv:CVE-2026-55579",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-55579",
      "aliases": [
        "CVE-2026-55579",
        "GHSA-p4h7-p9rj-2pq2"
      ],
      "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/pheditor/pheditor",
              "type": "GIT",
              "events": [
                {
                  "introduced": "44378852dbc5fe07893a09f2b59648fadbed1ce1"
                },
                {
                  "fixed": "a64eb935ce699e43f1ea60e46d47f33e2f87ffd6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.0.1"
                      },
                      {
                        "fixed": "2.0.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a64eb935ce699e43f1ea60e46d47f33e2f87ffd6"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "2.0.6"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.6"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.5",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "2.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55579.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.275768176Z",
      "provider": "osv",
      "references": [
        "https://github.com/pheditor/pheditor/releases/tag/2.0.6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55579.json",
        "https://github.com/pheditor/pheditor/security/advisories/GHSA-p4h7-p9rj-2pq2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-55579"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-798"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55579.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-55579",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 508084,
  "published_at": "2026-07-27T17:54:45.156+00:00"
}