Upsonic server.py os.path.join path traversal

{
  "id": "ec63421037bf981fcee6377ec939e4fdbf317c91f572711478c675b8735ec453",
  "url": "https://osv.dev/vulnerability/CVE-2025-6278",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Upsonic server.py os.path.join path traversal",
    "summary": "A vulnerability classified as critical was found in Upsonic up to 0.55.6. This vulnerability affects the function os.path.join of the file markdown/server.py. The manipulation of the argument file.filename leads to path traversal. The exploit has been disclosed to the public and may be used.",
    "evidence": "osv:CVE-2025-6278",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-6278",
      "aliases": [
        "CVE-2025-6278",
        "GHSA-8jf4-fcjr-68c2",
        "PYSEC-2025-67"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/upsonic/upsonic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "912bde3a7b292a324ab2c52176e17c2b0bcff63a"
                },
                {
                  "last_affected": "97f9f8fd28fc1474e020e992f65b154577847a11"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.55.0"
                      },
                      {
                        "last_affected": "0.55.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.55.1"
                      },
                      {
                        "last_affected": "0.55.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.55.2"
                      },
                      {
                        "last_affected": "0.55.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.55.3"
                      },
                      {
                        "last_affected": "0.55.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.55.4"
                      },
                      {
                        "last_affected": "0.55.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.55.5"
                      },
                      {
                        "last_affected": "0.55.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.55.6"
                      },
                      {
                        "last_affected": "0.55.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "cpe": "cpe:2.3:a:upsonic:upsonic:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.55.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.55.0",
            "0.55.1",
            "0.55.2",
            "0.55.3",
            "0.55.4",
            "0.55.5",
            "0.55.6",
            "v0.55.6",
            "v0.55.5",
            "v0.55.4",
            "v0.55.3",
            "v0.55.2",
            "v0.55.1",
            "v0.55.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6278.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.641752384Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6278.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-6278",
        "https://vuldb.com/?id.313282",
        "https://vuldb.com/?submit.593096",
        "https://github.com/Upsonic/Upsonic/issues/356",
        "https://vuldb.com/?ctiid.313282"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6278.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-6278",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497589,
  "published_at": "2025-06-19T20:31:05.135+00:00"
}