CVE-2026-50045

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Source
https://cve.org/CVERecord?id=CVE-2026-50045
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50045.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-50045
Downstream
Related
Published
2026-07-22T14:17:19.987Z
Modified
2026-07-27T14:06:44.465205Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a single client query for a deeply nested name under a DNSSEC-signed parent can cause Unbound to send more upstream packets per client query than the configured 'max-global-quota'. This effectively bypasses a security configuration that limits upstream amplification traffic.

References

Affected packages

Git / github.com/nlnetlabs/unbound

Affected ranges

Type
GIT
Repo
https://github.com/nlnetlabs/unbound
Events
Introduced
0076736fc40298eb6252705e6e158462c6b24d06
Fixed
c33ad1b1a21e48bfe4f140e90252a9be1b0c5745
Database specific 
{
    "cpe": "cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "1.22.0"
        },
        {
            "fixed": "1.25.2"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

release-1.*
release-1.22.0
release-1.23.0rc1
release-1.24.0
release-1.24.0rc1
release-1.25.0
release-1.25.0rc1
release-1.25.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50045.json"