cvedb.io
CVE-2026-5773
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-05-13T13:01:56.307 · Last modified 2026-06-17T10:59:37.340

Summary

libcurl might in some circumstances reuse the wrong connection for SMB(S) transfers. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a network transfer operation that was requested by an application could wrongfully reuse an existing SMB connection to the same server that was using a different 'share' than the new subsequent transfer should. This could in unlucky situations lead to the download of the wrong file or the upload of a file to the wrong place. When this happens, the same credentials are used and the server name is the same.

Affected products

haxx — curl

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.