Security advisory

{
  "id": "214aadb0b2e9c376510414574465936c2407a53c7c47d470c655d9418fbdb811",
  "url": "https://osv.dev/vulnerability/CVE-2021-27693",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-27693",
    "summary": "Server-side Request Forgery (SSRF) vulnerability in PublicCMS before 4.0.202011.b via /publiccms/admin/ueditor when the action is catchimage.",
    "evidence": "osv:CVE-2021-27693",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-27693",
      "aliases": [
        "CVE-2021-27693"
      ],
      "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/sanluan/publiccms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c7ea0de73f02bfd15b34f292c19aec995aac4b92"
                },
                {
                  "fixed": "0f4c4872914b6a71305e121a7d9a19c07cde0338"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:publiccms:publiccms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.0.202011.b"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0f4c4872914b6a71305e121a7d9a19c07cde0338"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "V4.0.190312",
            "V4.0.202004",
            "V4.0.181024",
            "V4.0.180707",
            "V2016"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27693.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-27693-2d633050",
                "digest": {
                  "length": 1694,
                  "function_hash": "192039935373006367014661931540540476365"
                },
                "source": "https://github.com/sanluan/publiccms/commit/0f4c4872914b6a71305e121a7d9a19c07cde0338",
                "target": {
                  "file": "publiccms-parent/publiccms-core/src/main/java/com/publiccms/controller/admin/sys/UeditorAdminController.java",
                  "function": "catchimage"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-27693-5b20876b",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "141326919820996564797013155226213795623",
                    "78845168295621787340183449689069356993",
                    "269010254346367733320404006937166127746",
                    "298592195030615098786519984137948389252",
                    "61989723236335373360057439079114747445",
                    "58957340141528407110014582547817840001",
                    "165468996588821184815445960609625917276",
                    "276514388446542247011671659203140782132",
                    "71374255232051737259711179155187490650",
                    "165401202299429695862386331358726564060"
                  ]
                },
                "source": "https://github.com/sanluan/publiccms/commit/0f4c4872914b6a71305e121a7d9a19c07cde0338",
                "target": {
                  "file": "publiccms-parent/publiccms-core/src/main/java/com/publiccms/controller/admin/sys/UeditorAdminController.java"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-27693-ae8c3f2e",
                "digest": {
                  "length": 387,
                  "function_hash": "233227836319576122985486019302934886378"
                },
                "source": "https://github.com/sanluan/publiccms/commit/c7ea0de73f02bfd15b34f292c19aec995aac4b92",
                "target": {
                  "file": "publiccms-parent/publiccms-core/src/main/java/com/publiccms/views/method/tools/GetTemplateResultMethod.java",
                  "function": "GetTemplateResultMethod"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-27693-ec4cfe2b",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "245468747923729660101904483821063441514",
                    "87605925112921678046830315410915127285",
                    "95722159187449082608616798773208732170",
                    "299615010879116396561290742767980534578",
                    "58039849673713423896836921152444072255",
                    "156149154206116312392191016600537841377",
                    "326791870532611481503806934559336726607"
                  ]
                },
                "source": "https://github.com/sanluan/publiccms/commit/c7ea0de73f02bfd15b34f292c19aec995aac4b92",
                "target": {
                  "file": "publiccms-parent/publiccms-core/src/main/java/com/publiccms/views/method/tools/GetTemplateResultMethod.java"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:17:19Z"
          }
        }
      ],
      "modified": "2026-10-20T14:17:19.364817453Z",
      "provider": "osv",
      "references": [
        "https://github.com/sanluan/PublicCMS/issues/51",
        "https://github.com/sanluan/PublicCMS/commit/0f4c4872914b6a71305e121a7d9a19c07cde0338"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-27693",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388775,
  "published_at": "2022-09-02T18:15:11.687+00:00"
}