text-generation-webui has a Path Traversal in load_preset() — .yaml file read without authentication

{
  "id": "2eb1ee0059fc69becedfb81afa86d1afbe2491d01eca9aeecc6b6647a9ac12cc",
  "url": "https://osv.dev/vulnerability/CVE-2026-35484",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "text-generation-webui has a Path Traversal in load_preset() — .yaml file read without authentication",
    "summary": "text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, an unauthenticated path traversal vulnerability in load_preset() allows reading any .yaml file on the server filesystem. The parsed YAML key-value pairs (including passwords, API keys, connection strings) are returned in the API response. This vulnerability is fixed in 4.3.",
    "evidence": "osv:CVE-2026-35484",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-35484",
      "aliases": [
        "CVE-2026-35484",
        "GHSA-w3cv-4447-5hf5"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/oobabooga/textgen",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9374a4e70d4e3d26ddda30e5493ad8a7b1d75122"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:oobabooga:textgen:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.2",
            "v4.1.1",
            "v4.1",
            "v4.0",
            "v3.23",
            "v3.22",
            "v3.21",
            "v3.20",
            "v3.19",
            "v3.18",
            "v3.17",
            "v3.16",
            "v3.15",
            "v3.14",
            "v3.13",
            "v3.12",
            "v3.11",
            "v3.10",
            "v3.9.1",
            "v3.9",
            "v3.8",
            "v3.7.1",
            "v3.7",
            "v3.6.1",
            "v3.6",
            "v3.5",
            "v3.4.1",
            "v3.4",
            "v3.3.2",
            "v3.3.1",
            "v3.3",
            "v3.2",
            "v3.1",
            "v3.0",
            "v2.8.1",
            "v2.8",
            "v2.7",
            "v2.6",
            "v2.5",
            "v2.4",
            "v2.3",
            "v2.2",
            "v2.1",
            "v2.0",
            "v1.16",
            "v1.15",
            "v1.14",
            "v1.13",
            "v1.12",
            "v1.11",
            "v1.10.1",
            "v1.10",
            "v1.9.1",
            "v1.9",
            "v1.8",
            "snapshot-2024-04-28",
            "snapshot-2024-04-21",
            "snapshot-2024-04-14",
            "snapshot-2024-04-07",
            "snapshot-2024-03-31",
            "snapshot-2024-03-24",
            "snapshot-2024-03-17",
            "snapshot-2024-03-10",
            "snapshot-2024-03-03",
            "snapshot-2024-02-25",
            "snapshot-2024-02-18",
            "snapshot-2024-02-11",
            "snapshot-2024-02-04",
            "snapshot-2024-01-28",
            "snapshot-2024-01-21",
            "snapshot-2024-01-14",
            "snapshot-2024-01-07",
            "snapshot-2023-12-31",
            "snapshot-2023-12-24",
            "snapshot-2023-12-17",
            "snapshot-2023-12-10",
            "snapshot-2023-12-03",
            "snapshot-2023-11-26",
            "snapshot-2023-11-19",
            "snapshot-2023-11-12",
            "snapshot-2023-11-05",
            "snapshot-2023-10-29",
            "snapshot-2023-10-22",
            "v1.7",
            "1.6.1",
            "v1.6",
            "v1.5",
            "v1.4",
            "v1.1",
            "v1.0",
            "installers"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35484.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.849743164Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35484.json",
        "https://github.com/oobabooga/text-generation-webui/security/advisories/GHSA-w3cv-4447-5hf5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-35484"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35484.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-35484",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491482,
  "published_at": "2026-04-07T14:46:42.351+00:00"
}