It was discovered that SSSD did not properly validate authentication token lengths when processing PAM responder requests. A local attacker could possibly use this issue to cause SSSD to crash, resulting in a denial of service.
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "libipa-hbac0"
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "libnss-sss"
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{
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{
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{
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{
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{
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "libsss-sudo"
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{
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"binary_name": "python3-libipa-hbac"
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "python3-libsss-nss-idmap"
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "python3-sss"
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd"
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-ad"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-ad-common"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-common"
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-dbus"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-ipa"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-kcm"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-krb5"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-krb5-common"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-ldap"
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{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-proxy"
},
{
"binary_version": "2.6.3-1ubuntu3.9",
"binary_name": "sssd-tools"
}
]
}"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8718-1.json"
{
"ecosystem": "Ubuntu:22.04:LTS",
"cves": [
{
"id": "CVE-2026-68743",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "libipa-hbac0t64"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "libnss-sss"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "libpam-sss"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "libsss-certmap0"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "libsss-idmap0"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "libsss-nss-idmap0"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "libsss-sudo"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "python3-libipa-hbac"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "python3-libsss-nss-idmap"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "python3-sss"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd"
},
{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-ad"
},
{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-ad-common"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-common"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-dbus"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-idp"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-ipa"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-kcm"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-krb5"
},
{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-krb5-common"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-ldap"
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{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-passkey"
},
{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-proxy"
},
{
"binary_version": "2.9.4-1.1ubuntu6.8",
"binary_name": "sssd-tools"
}
]
}"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8718-1.json"
{
"ecosystem": "Ubuntu:24.04:LTS",
"cves": [
{
"id": "CVE-2026-68743",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "libipa-hbac0t64"
},
{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "libnss-sss"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "libpam-sss"
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{
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"binary_name": "libsss-certmap0"
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{
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"binary_name": "libsss-idmap0"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "libsss-nss-idmap0"
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{
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"binary_name": "libsss-sudo"
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{
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"binary_name": "python3-libipa-hbac"
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{
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"binary_name": "python3-libsss-nss-idmap"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "python3-sss"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-ad"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-ad-common"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-common"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-dbus"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-idp"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-ipa"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-kcm"
},
{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-krb5"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-krb5-common"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-ldap"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-passkey"
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{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-proxy"
},
{
"binary_version": "2.12.0-1ubuntu5.4",
"binary_name": "sssd-tools"
}
]
}"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8718-1.json"
{
"ecosystem": "Ubuntu:26.04:LTS",
"cves": [
{
"id": "CVE-2026-68743",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
{
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
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{
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"binary_name": "libipa-hbac0"
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{
"binary_version": "1.13.4-1ubuntu1.15+esm1",
"binary_name": "libnss-sss"
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{
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{
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{
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{
"binary_version": "1.13.4-1ubuntu1.15+esm1",
"binary_name": "libsss-simpleifp0"
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{
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{
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{
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"binary_name": "python-libipa-hbac"
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{
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{
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"binary_name": "python-sss"
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{
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"binary_name": "python3-libipa-hbac"
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{
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{
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{
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{
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"binary_name": "sssd-ad"
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{
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"binary_name": "sssd-ad-common"
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{
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"binary_name": "sssd-common"
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{
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{
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{
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{
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{
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{
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"binary_name": "sssd-proxy"
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{
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}"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8718-1.json"
{
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{
"id": "CVE-2026-68743",
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{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
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]
}
]
}
{
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{
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{
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{
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{
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{
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{
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"binary_name": "libsss-sudo"
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{
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"binary_name": "libwbclient-sssd"
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{
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"binary_name": "python-libipa-hbac"
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{
"binary_version": "1.16.1-1ubuntu1.8+esm1",
"binary_name": "python-libsss-nss-idmap"
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{
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{
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"binary_name": "python3-libipa-hbac"
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{
"binary_version": "1.16.1-1ubuntu1.8+esm1",
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{
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"binary_name": "python3-sss"
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{
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"binary_name": "sssd"
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{
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"binary_name": "sssd-ad"
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{
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"binary_name": "sssd-ad-common"
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{
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{
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{
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{
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{
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{
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{
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{
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{
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}"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8718-1.json"
{
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{
"id": "CVE-2026-68743",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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"binary_name": "sssd"
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{
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"binary_name": "sssd-ad"
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{
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{
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{
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"binary_name": "sssd-krb5-common"
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{
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{
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{
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}"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8718-1.json"
{
"ecosystem": "Ubuntu:Pro:20.04:LTS",
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{
"id": "CVE-2026-68743",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}