CVE-2026-59842
Libssh: libssh: information disclosure via short gssapi curve25519 public key
CVSS Score
3.7
EPSS Score
0.0%
EPSS Percentile
0th
A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.
| CWE | CWE-125 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Jul 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Hardened Images
All versions affected References
Credits
Red Hat would like to thank Haruki Oyama, Yi Lin, and nevv for reporting this issue.