It was discovered that OpenStack Designate did not properly validate overlapping zones under certain circumstances. An authenticated user could possibly use this issue to redirect DNS traffic to attacker-controlled systems or cause a denial of service.
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{
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8860-1.json"
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{
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8860-1.json"
{
"availability": "No subscription required",
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8860-1.json"
{
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8860-1.json"
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"id": "CVE-2026-71193",
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],
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8860-1.json"
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