DEBIAN-CVE-2026-0966

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Source
https://security-tracker.debian.org/tracker/CVE-2026-0966
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0966.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-0966
Upstream
Published
2026-03-26T21:17:00.783Z
Modified
2026-05-12T04:52:02.345430013Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Summary
[none]
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.

References

Affected packages

Debian:11 / libssh

Package

Name
libssh
Purl
pkg:deb/debian/libssh?arch=source&distro=bullseye

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.5-1
0.9.5-1+deb11u1
0.9.6-1
0.9.6-2
0.9.7-0+deb11u1
0.9.8-0+deb11u1
0.9.8-0+deb11u2
0.10.4-1
0.10.4-2
0.10.5-1
0.10.5-2
0.10.5-3
0.10.5-3+hurd.1
0.10.6-1
0.10.6-2
0.10.6-3
0.11.1-1
0.11.1-2
0.11.2-1
0.11.3-1
0.12.0-1
0.12.0-2
0.12.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

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

Debian:12 / libssh

Package

Name
libssh
Purl
pkg:deb/debian/libssh?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.10.5-2
0.10.5-3
0.10.5-3+hurd.1
0.10.6-0+deb12u1
0.10.6-0+deb12u2
0.10.6-1
0.10.6-2
0.10.6-3
0.11.1-1
0.11.1-2
0.11.2-1
0.11.3-1
0.12.0-1
0.12.0-2
0.12.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

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

Debian:13 / libssh

Package

Name
libssh
Purl
pkg:deb/debian/libssh?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.11.2-1
0.11.2-1+deb13u1
0.11.3-1
0.12.0-1
0.12.0-2
0.12.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

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

Debian:14 / libssh

Package

Name
libssh
Purl
pkg:deb/debian/libssh?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.12.0-1

Affected versions

0.*
0.11.2-1
0.11.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

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