3.1Low
Libssh Libssh
CVE-2026-0968
A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.
What this means for your business
- It affects Libssh. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, but only after tricking someone into an action such as opening a file or a link.
What to do
- 1Check whether your company or your suppliers run Libssh, and which version. The affected versions are listed further down this page.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 3.1 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L- Weakness
- CWE-476
- Assigned by
- secalert@redhat.com
Dates
- Published
- 2026-03-26
- Last modified
- 2026-09-01
- Sources
- NVD
Affected products
- Libssh Libssh- 0.11.3
- Redhat Enterprise Linux9.0, 10.0
As listed in the NVD configuration data. Not a statement about your estate.