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curl — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2021-22923

When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.

Products
curl
Affected versions
Not specified
Fixed versions
7.79.1-1
CVEs
CVE-2021-22923
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 16:49 UTC · Revision 1

Source evidence

DEBIAN-CVE-2021-22923

core-osv · Original source

Published 5 Aug 2021, 21:15 UTC

When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.

osv:DEBIAN-CVE-2021-22923

curl

Fixed versions: 7.79.1-1

curl

Fixed versions: 7.79.1-1

curl

Fixed versions: 7.79.1-1

Complete source record
{
  "id": "5d3322751ccc92452dbde8c1f29e21f0855a3275c5e75edeefecc2e5fdfd4eda",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-22923",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2021-22923",
    "summary": "When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.",
    "evidence": "osv:DEBIAN-CVE-2021-22923",
    "products": [
      {
        "name": {
          "value": "curl",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.79.1-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "curl",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.79.1-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "curl",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.79.1-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2021-22923",
      "aliases": [
        "DEBIAN-CVE-2021-22923"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.79.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "curl",
            "purl": "pkg:deb/debian/curl?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22923.json"
          },
          "ecosystem_specific": {
            "urgency": "unimportant"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.79.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "curl",
            "purl": "pkg:deb/debian/curl?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22923.json"
          },
          "ecosystem_specific": {
            "urgency": "unimportant"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.79.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "curl",
            "purl": "pkg:deb/debian/curl?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22923.json"
          },
          "ecosystem_specific": {
            "urgency": "unimportant"
          }
        }
      ],
      "modified": "2026-10-15T09:47:41.078460287Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-22923"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2021-22923"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-22923",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 328321,
  "published_at": "2021-08-05T21:15:11.293+00:00"
}