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Solution
This issue is fixed starting with version 1.25.2
Workaround
No workaround given by the vendor.
Tue, 28 Jul 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat hummingbird |
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| CPEs | cpe:/a:redhat:hummingbird:1 | |
| Vendors & Products |
Redhat
Redhat hummingbird |
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| References |
| |
| Metrics |
threat_severity
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threat_severity
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Mon, 27 Jul 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Nlnetlabs
Nlnetlabs unbound |
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| Vendors & Products |
Nlnetlabs
Nlnetlabs unbound |
Wed, 22 Jul 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 22 Jul 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a single delegated zone to poison arbitrary sibling zones under NSEC-signed parent domains. A malicious actor with one registered domain under an NSEC-signed TLD can serve malicious insecure DNS responses for unrelated sibling domains (sharing the same parent zone). Arbitrary delegations that do not exist under the parent domain and are covered by the parent's NSEC chain can be brought into insecure existence by fraudulent wildcard DS records (less labels than expected, unknown algorithm) from the malicious sibling domain. This allows the malicious actor to inject insecure wildcard records for those delegations. | |
| Title | Cross-zone wildcard cache poisoning via RRSIG.labels manipulation | |
| Weaknesses | CWE-345 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: NLnet Labs
Published:
Updated: 2026-07-22T18:56:16.014Z
Reserved: 2026-06-22T12:35:21.352Z
Link: CVE-2026-44690
Updated: 2026-07-22T18:56:12.325Z
No data.
OpenCVE Enrichment
Updated: 2026-07-27T20:15:03Z