Security advisory

{
  "id": "6a7078eb1538b24eccd8c8be9325234ee10da8c17a8acbb902b2bbc63c05234e",
  "url": "https://osv.dev/vulnerability/CVE-2020-26138",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-26138",
    "summary": "In SilverStripe through 4.6.0-rc1, a FormField with square brackets in the field name skips validation.",
    "evidence": "osv:CVE-2020-26138",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-26138",
      "aliases": [
        "BIT-silverstripe-2020-26138",
        "CVE-2020-26138",
        "GHSA-7mv4-4xpg-xq44"
      ],
      "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/silverstripe/silverstripe-cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "815d9e58b648d861adc0177a1c35b10b880e2fde"
                },
                {
                  "introduced": "aa6f0fd66ca4567d09196c684ded2a93f5a3a24f"
                },
                {
                  "last_affected": "aa6f0fd66ca4567d09196c684ded2a93f5a3a24f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:silverstripe:silverstripe:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.6.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:silverstripe:silverstripe:4.6.0:rc1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.6.0-rc1"
                      },
                      {
                        "last_affected": "4.6.0-rc1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.6.0-rc1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26138.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/silverstripe/silverstripe-framework",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d94075b02ca9130bd1a686ca37181ef3f5af2a22"
                },
                {
                  "introduced": "10940773206662e9d0e788f669f031b3ca116df3"
                },
                {
                  "last_affected": "10940773206662e9d0e788f669f031b3ca116df3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:silverstripe:silverstripe:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.6.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:silverstripe:silverstripe:4.6.0:rc1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.6.0-rc1"
                      },
                      {
                        "last_affected": "4.6.0-rc1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.6.0-rc1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26138.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:26.729337638Z",
      "provider": "osv",
      "references": [
        "https://forum.silverstripe.org/c/releases",
        "https://www.silverstripe.org/blog/tag/release",
        "https://www.silverstripe.org/download/security-releases/",
        "https://www.silverstripe.org/download/security-releases/cve-2020-26138"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-26138",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431669,
  "published_at": "2021-06-08T18:15:07.947+00:00"
}