Security advisory

{
  "id": "a8b0622c1d0d92f5ba2b29c07d4899105ab984a84d9ba1f5e21de91d4bce9ea9",
  "url": "https://osv.dev/vulnerability/CVE-2018-1000850",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-1000850",
    "summary": "Square Retrofit version versions from (including) 2.0 and 2.5.0 (excluding) contains a Directory Traversal vulnerability in RequestBuilder class, method addPathParameter that can result in By manipulating the URL an attacker could add or delete resources otherwise unavailable to her.. This attack appear to be exploitable via An attacker should have access to an encoded path parameter on POST, PUT or DELETE request.. This vulnerability appears to have been fixed in 2.5.0 and later.",
    "evidence": "osv:CVE-2018-1000850",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-1000850",
      "aliases": [
        "CVE-2018-1000850",
        "GHSA-8p8g-f9vg-r7xr"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/lysine-dev/retrofit",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c4551d99892a3a56708dd0c945efa5619337269a"
                },
                {
                  "fixed": "40621bf538f6d48af182350adc880406c53dc67c"
                },
                {
                  "fixed": "b9a7f6ad72073ddd40254c0058710e87a073047d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:squareup:retrofit:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.5.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b9a7f6ad72073ddd40254c0058710e87a073047d"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "parent-2.4.0",
            "parent-2.3.0",
            "parent-2.2.0",
            "parent-2.1.0",
            "parent-2.0.2",
            "parent-2.0.1",
            "parent-2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000850.json",
            "vanir_signatures": [
              {
                "id": "CVE-2018-1000850-c0de96c1",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                    "97026240915614146763193864591346597586",
                    "51712399448696671204953681802157976560"
                  ]
                },
                "source": "https://github.com/lysine-dev/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d",
                "target": {
                  "file": "retrofit/src/main/java/retrofit2/RequestBuilder.java"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-1000850-cd119f10",
                "digest": {
                  "length": 208,
                  "function_hash": "251728731700246826178612271796975777953"
                },
                "source": "https://github.com/lysine-dev/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d",
                "target": {
                  "file": "retrofit/src/main/java/retrofit2/RequestBuilder.java",
                  "function": "addPathParam"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-1000850-d2b4f013",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                    "175210626683847573878346970808021998939"
                  ]
                },
                "source": "https://github.com/lysine-dev/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d",
                "target": {
                  "file": "retrofit/src/test/java/retrofit2/RequestFactoryTest.java"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:26:22Z"
          }
        }
      ],
      "modified": "2026-10-20T13:26:22.953487456Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E",
        "https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E",
        "https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E",
        "https://access.redhat.com/errata/RHSA-2019:3892",
        "https://github.com/square/retrofit/blob/master/CHANGELOG.md",
        "https://github.com/square/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d#diff-943ec7ed35e68201824904d1dc0ec982",
        "https://ihacktoprotect.com/post/retrofit-path-traversal/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-1000850",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387679,
  "published_at": "2018-12-20T15:29:02.423+00:00"
}