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.
Metrics
Affected Vendors & Products
References
History
Thu, 16 Apr 2026 14:15:00 +0000
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ssvc
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Status: PUBLISHED
Assigner: hackerone
Published: 2021-08-05T00:00:00.000Z
Updated: 2026-04-16T14:09:32.149Z
Reserved: 2021-01-06T00:00:00.000Z
Link: CVE-2021-22922
Updated: 2024-08-03T18:58:26.106Z
Status : Modified
Published: 2021-08-05T21:15:11.173
Modified: 2026-04-16T15:16:43.730
Link: CVE-2021-22922