CVE-2026-5773

01/תיאור (מקור, אנגלית)

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.

02/מוצרים מושפעים

haxx: curl

03/קישורים5

• curl.se/docs/CVE-2026-5773.html PatchVendor Advisory
• curl.se/docs/CVE-2026-5773.json Vendor Advisory
• www.openwall.com/lists/oss-security/2026/04/29/9 Mailing ListPatchThird Party Advisory
• hackerone.com/reports/3650689 ExploitIssue TrackingThird Party Advisory
• hackerone.com/reports/3650689 ExploitIssue TrackingThird Party Advisory