CVE-2026-8926 (GCVE-0-2026-8926)

Vulnerability from cvelistv5 – Published: 2026-07-03 06:15 – Updated: 2026-09-15 06:03
VLAI
Title
password leak with netrc and user in URL
Summary
When asking curl to use a `.netrc` file to find credentials and at the same time specifying a URL with a username (without a password), like `https://user@example.com/`, curl could wrongly get and use the password for *another* user set in the `.netrc` file for that host if such a one exists and there is no match for the specified user.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-06 17:01 UTC
CWE
  • CWE-522 - Insufficiently Protected Credentials
Assigner
curl CNA under the redhat root
CNA scorecard D 46/100 over 59 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
curl curl Affected: 8.11.1 , < 8.14.2 (semver)
Affected: 8.15.0 , < 8.16.1 (semver)
Affected: 8.17.0 , < 8.20.1 (semver)
guessed Create a notification for this product.
curl curl Affected: e9b9bbac22c26cf67316fa8e6c6b9e831af31949 , < 4ae1d7cc2643e4773a136395f12bc02fc6867854 (git)
guessed Create a notification for this product.
curl curl Affected: 8.20.0
Affected: 8.19.0
Affected: 8.18.0
Affected: 8.17.0
Affected: 8.16.0
Affected: 8.15.0
Affected: 8.14.1
Affected: 8.14.0
Affected: 8.13.0
Affected: 8.12.1
Affected: 8.12.0
Affected: 8.11.1
guessed Create a notification for this product.
Credits
Joshua Rogers (Aisle Research) Stefan Eissing
Show details on NVD website
To clipboard 

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                  "status": "affected",
                  "version": "8.11.1"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "Joshua Rogers (Aisle Research)"
            },
            {
              "lang": "en",
              "type": "remediation developer",
              "value": "Stefan Eissing"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "When asking curl to use a `.netrc` file to find credentials and at the same\ntime specifying a URL with a username (without a password), like\n`https://user@example.com/`, curl could wrongly get and use the password for\n*another* user set in the `.netrc` file for that host if such a one exists and\nthere is no match for the specified user."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-522",
                  "description": "Insufficiently Protected Credentials",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-15T06:03:23.777Z",
            "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
            "shortName": "curl"
          },
          "references": [
            {
              "url": "https://curl.se/docs/CVE-2026-8926.json"
            },
            {
              "url": "https://curl.se/docs/CVE-2026-8926.html"
            },
            {
              "url": "https://hackerone.com/reports/3735184"
            }
          ],
          "title": "password leak with netrc and user in URL",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_osv": {
            "affected": [
              {
                "ranges": [
                  {
                    "events": [
                      {
                        "introduced": "8.11.1"
                      },
                      {
                        "fixed": "8.14.2"
                      },
                      {
                        "introduced": "8.15.0"
                      },
                      {
                        "fixed": "8.16.1"
                      },
                      {
                        "introduced": "8.17.0"
                      },
                      {
                        "fixed": "8.20.1"
                      }
                    ],
                    "type": "SEMVER"
                  },
                  {
                    "events": [
                      {
                        "introduced": "e9b9bbac22c26cf67316fa8e6c6b9e831af31949"
                      },
                      {
                        "fixed": "4ae1d7cc2643e4773a136395f12bc02fc6867854"
                      }
                    ],
                    "repo": "https://github.com/curl/curl.git",
                    "type": "GIT"
                  }
                ],
                "versions": [
                  "8.20.0",
                  "8.19.0",
                  "8.18.0",
                  "8.17.0",
                  "8.16.0",
                  "8.15.0",
                  "8.14.1",
                  "8.14.0",
                  "8.13.0",
                  "8.12.1",
                  "8.12.0",
                  "8.11.1"
                ]
              }
            ],
            "aliases": [
              "CVE-2026-8926"
            ],
            "credits": [
              {
                "name": "Joshua Rogers (Aisle Research)",
                "type": "finder"
              },
              {
                "name": "Stefan Eissing",
                "type": "remediation developer"
              }
            ],
            "database_specific": {
              "CWE": {
                "desc": "Insufficiently Protected Credentials",
                "id": "CWE-522"
              },
              "URL": "https://curl.se/docs/CVE-2026-8926.json",
              "affects": "both",
              "issue": "https://hackerone.com/reports/3735184",
              "last_affected": "8.20.0",
              "package": "curl",
              "severity": "Low",
              "www": "https://curl.se/docs/CVE-2026-8926.html"
            },
            "details": "When asking curl to use a `.netrc` file to find credentials and at the same\ntime specifying a URL with a username (without a password), like\n`https://user@example.com/`, curl could wrongly get and use the password for\n*another* user set in the `.netrc` file for that host if such a one exists and\nthere is no match for the specified user.",
            "id": "CURL-CVE-2026-8926",
            "modified": "2026-09-07T10:34:51.00Z",
            "published": "2026-06-24T08:00:00.00Z",
            "schema_version": "1.5.0",
            "summary": "password leak with netrc and user in URL"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "assignerShortName": "curl",
        "cveId": "CVE-2026-8926",
        "datePublished": "2026-07-03T06:15:45.735Z",
        "dateReserved": "2026-05-19T08:11:58.393Z",
        "dateUpdated": "2026-09-15T06:03:23.777Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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