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Affected Component
Analysis
libssh2
Exploitable
Name
CVE-2026-58051
Description
libssh2 through 1.11.1 grows its publickey list with SSH2_REALLOC but does not zero-initialize new entries before parsing populates them, so a parse failure reaching the cleanup path leaves libssh2_publickey_list_free operating on an uninitialized entry. A malicious SSH server offering the publickey subsystem can use a malformed response to make cleanup free an uninitialized, attacker-influenceable attrs pointer in a connecting libssh2 client.
CWEs
Published Date
Updated Date
Workaround
-
Analysis#
Vulnerability Ratings#
8.3
CVSSv4
6.5
CVSSv31
NaN
other