CVE-2026-55708

Privacy/configuration issue when adding local data in views through 'unbound-control'

LOW
3.1
CVSS Score
Published: July 22, 2026 at 01:09 PM UTC
Updated: October 24, 2026 at 01:10 PM UTC
1 product affected across 1 vendorUnbound

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Severity
LOW3.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, the 'view_local_data' and 'view_local_datas' commands of 'unbound-control' create a bare local zones tree for an already configured named view when the view is configured with no local data to begin with. However, the creation through the control interface omits adding the default-protected zones (e.g., RFC 1918 reverse, AS112 zones, .onion, .localhost). Once the local zone tree exists without the defaults, every query for a default-protected name from a client mapped to that view escapes to the public DNS via the iterator instead of being answered locally, bypassing local policy expectations.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.6.0 ≤ v < 1.25.21.6.0
Affected range stops below 1.25.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.1LOWNLnet Labs
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1188

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