Security advisory

{
  "id": "f5a5bce57b0d1e10c993057912a19d04e3b1d6fe1e07d348b299013c8cdf36f7",
  "url": "https://osv.dev/vulnerability/CVE-2017-5539",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-5539",
    "summary": "The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\\/ to bypass the filter rule. Then, this attacker can exploit this vulnerability to delete or read any files on the server. It can also be used to determine whether a file exists.",
    "evidence": "osv:CVE-2017-5539",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2017-5539",
      "aliases": [
        "CVE-2017-5539"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/b2evolution/b2evolution",
              "type": "GIT",
              "events": [
                {
                  "introduced": "551702a31751ac1f98ea89e1ef62794294f6f3a2"
                },
                {
                  "last_affected": "551702a31751ac1f98ea89e1ef62794294f6f3a2"
                },
                {
                  "fixed": "e35f7c195d8c1103d2d981a48cda5ab45ecac48a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:b2evolution:b2evolution:6.8.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.8.4"
                      },
                      {
                        "last_affected": "6.8.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e35f7c195d8c1103d2d981a48cda5ab45ecac48a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.8.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-5539.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:45.478661012Z",
      "provider": "osv",
      "references": [
        "https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a",
        "https://github.com/b2evolution/b2evolution/issues/36"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-5539",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380777,
  "published_at": "2017-01-23T07:59:00.5+00:00"
}