Findings

CVE-2021-22922

When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file…

Published Aug 5, 2021 · updated Oct 14, 2026 · haxx curl

When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different servers and theclient can then download the file from one or several of them. In a serial orparallel manner.If one of the servers hosting the contents has been breached and the contentsof the specific file on that server is replaced with a modified payload, curlshould detect this when the hash of the file mismatches after a completeddownload. It should remove the contents and instead try getting the contentsfrom another URL. This is not done, and instead such a hash mismatch is onlymentioned in text and the potentially malicious content is kept in the file ondisk.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 5, 2021 · NIST NVD

    Detected

    When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different servers and theclient can then download the file from one or several of them. In a serial orparallel manner.If one of t

  2. Oct 14, 2026 · NIST NVD

    Updated

    When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different servers and theclient can then download the file from one or several of them. In a serial orparallel manner.If one of t

Affected

  • cpe fedoraproject/fedora33
  • cpe haxx/curlversion unspecified
  • cpe netapp/cloud backupversion unspecified
  • cpe netapp/clustered data ontapversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/h700s firmwareversion unspecified
  • cpe netapp/hci management nodeversion unspecified
  • cpe netapp/solidfireversion unspecified
  • cpe oracle/mysql serverversion unspecified
  • cpe siemens/sinec infrastructure network servicesversion unspecified

Sources

  • CVE.orgCVE-2021-22922

    Official CVE identifier

    cve.org
  • NIST NVDCVE-2021-22922

    When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different

    nvd.nist.gov

References

CVE-2021-22922 · ZeroDay Findings