A flaw was found in libssh. A malicious SFTP server can send responses for unknown request IDs that libssh clients keep queued indefinitely, causing unbounded memory growth and client-side denial of service.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade libssh | Jul 29, 2026 | Jul 21, 2026 |
| Debian | — | Upgrade libssh | Aug 3, 2026 | Aug 3, 2026 |
| Redhat_linux | — | Upgrade libsshUpgrade libssh-develUpgrade libssh-debugsourceUpgrade libssh-configUpgrade libssh-debuginfo | Jul 23, 2026 | Jul 21, 2026 |
| Rocky_linux | — | Upgrade libsshUpgrade libssh-debuginfoUpgrade libssh-develUpgrade libssh-debugsource | Aug 20, 2026 | Aug 18, 2026 |
| Ubuntu | — | Upgrade libssh-4 | Aug 31, 2026 | Aug 31, 2026 |
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