CVE-2026-0966

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Source
https://cve.org/CVERecord?id=CVE-2026-0966
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-0966.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-0966
Downstream
Related
Published
2026-03-26T20:06:28.313Z
Modified
2026-05-28T04:11:16.276347632Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Summary
Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()
Details

A flaw was found in libssh. The API function ssh_get_hexa() is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to SSH_LOG_PACKET (3) or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

Database specific 
{
    "cwe_ids": [
        "CWE-124"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0966.json",
    "cna_assigner": "redhat"
}
References

Affected packages

Git / gitlab.com/libssh/libssh-mirror

Affected ranges

Type
GIT
Repo
https://gitlab.com/libssh/libssh-mirror
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ca9c055d7c78ce357346ac7c2b14047568d47aa1
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.11.4"
        }
    ],
    "cpe": "cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE"
}

Affected versions

libssh-0.*
libssh-0.11.0
libssh-0.11.1
libssh-0.11.2
libssh-0.11.3
libssh-0.8.0
Other
release-0-3-0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-0966.json"