baserCMS: Mail Form Acceptance Bypass via Public API

{
  "id": "c958a359bcb677799ae159a7f4512879a8c8dc18abc54e14ab29ba20305fe6ca",
  "url": "https://osv.dev/vulnerability/CVE-2026-30878",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "baserCMS: Mail Form Acceptance Bypass via Public API",
    "summary": "baserCMS is a website development framework. Prior to version 5.2.3, a public mail submission API allows unauthenticated users to submit mail form entries even when the corresponding form is not accepting submissions. This bypasses administrative controls intended to stop form intake and enables spam or abuse via the API. This issue has been patched in version 5.2.3.",
    "evidence": "osv:CVE-2026-30878",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-30878",
      "aliases": [
        "CVE-2026-30878",
        "GHSA-8cr7-r8qw-gp3c"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/baserproject/basercms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4cab078c93054f55d8fb36990a7ec7550f443932"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.2.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4cab078c93054f55d8fb36990a7ec7550f443932"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "5.2.3"
                  },
                  {
                    "cpe": "cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.2.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "5.2.2",
            "5.2.1",
            "5.2.0",
            "5.1.6",
            "5.1.5",
            "5.1.4",
            "5.1.3",
            "5.1.1",
            "5.0.0-beta4",
            "5.0.0-beta3",
            "5.0.0-beta2",
            "5.0.0-beta1",
            "4.7.5",
            "4.7.3",
            "4.7.2",
            "4.7.0",
            "4.6.2",
            "4.6.1.1",
            "4.6.1",
            "4.6.0",
            "4.5.2",
            "4.5.1",
            "4.5.0",
            "4.4.8",
            "4.4.6",
            "4.4.4",
            "4.4.3",
            "4.4.1.1",
            "4.4.2.1",
            "4.4.0",
            "4.3.7.1",
            "4.3.7",
            "4.3.6",
            "4.3.5",
            "4.3.3",
            "4.3.0",
            "4.2.4",
            "4.2.2",
            "4.1.2",
            "4.1.1",
            "4.1.0.1",
            "4.1.0",
            "4.0.7",
            "4.0.6",
            "4.0.0",
            "3.0.7",
            "3.0.0",
            "basercms-3.0.1",
            "3.0.1",
            "3.0.2",
            "3.0.4",
            "3.0.5.1",
            "3.0.3",
            "4.0.0-beta",
            "3.0.6",
            "3.0.6-beta",
            "3.0.5",
            "basercms-3.0.0",
            "basercms-2.1.2",
            "2.1.2",
            "basercms-2.1.0",
            "2.1.0",
            "basercms-2.0.3",
            "2.0.3",
            "basercms-2.0.2",
            "2.0.2",
            "basercms-2.0.1",
            "2.0.1",
            "basercms-2.0.0",
            "2.0.0",
            "basercms-2.0.0-beta",
            "2.0.0-beta"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30878.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.024346716Z",
      "provider": "osv",
      "references": [
        "https://basercms.net/security/JVN_20837860",
        "https://github.com/baserproject/basercms/releases/tag/5.2.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30878.json",
        "https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3c",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-30878"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-285"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30878.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-30878",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504256,
  "published_at": "2026-03-31T00:45:21.294+00:00"
}