CVE-2026-5773

CVE-2026-5773 · wrong reuse of SMB connection

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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.

CVSS 7.5 · Высокий · EPSS 0,6% · Есть исправление

Опубликовано

2026-05-13T08:27:42.342Z

Обновлено

2026-09-15T06:03:00.894Z

Стек: system

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