CVE-2023-50387

Repository based on https://github.com/knqyf263/CVE-2023-50387 with several modifications: Added resolver-fixed, which has an implementation of Unbound where the vulnerability we discussed is fixed. Created scripts for automating the generation of RRSIG keys. To auto-generate configuration files:...

K000163212: BIND vulnerability CVE-2026-13204

Security Advisory Description If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof. This issue affects BIND 9 versions 9.11.0...

MiracleLinux 9 : unbound-1.24.2-3.el9_8.4 (AXSA:2026-1692:11)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1692:11 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of...

TencentOS Server 3: bind9.16 (TSSA-2026:0925)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0925 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: unbound (UTSA-2026-104836)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104836 advisory. 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...

unbound security update

An update is available for unbound. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The unbound packages provide a validating, recursive, and caching DNS or DNSS...

RLSA-2026:55784 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 For more details about the security issues, including the impact, a CVSS...

RockyLinux 8 : unbound (RLSA-2026:55784)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:55784 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 Tenable has extracted the preceding...

AlmaLinux 10 : unbound (ALSA-2026:55892)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:55892 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service...

AlmaLinux 8 : unbound (ALSA-2026:55784)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:55784 advisory. unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 Tenable has extracted the preceding descripti...

Important: Red Hat Security Advisory: unbound security update

An update for unbound is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

RHEL 8 : unbound (RHSA-2026:55784)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:55784 advisory. The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via...

Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service via malformed EDNS Report-Channel opti...

ALSA-2026:55784 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 For more details about the security issues, including the impact, a CVSS...

ALSA-2026:55841 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 unbound: Unbound: Denial of Service via malformed EDNS Report-Channel opti...

Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-44690 For more details about the security issues, including the impact, a CVSS...

Oracle Linux 8 : bind9.16 (ELSA-2026-54509)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-54509 advisory. - Fix NSEC3 signer validation CVE-2026-10723 - Reject out-of-zone NSEC next owner names CVE-2026-13321 - Fix CVE-2026-11622: reference-counted DNS cac...

bind9.16 security update

32:9.16.23-0.22.12 - Fix NSEC3 signer validation CVE-2026-10723 - Resolves: RHEL-213499 32:9.16.23-0.22.11 - Reject out-of-zone NSEC next owner names CVE-2026-13321 - Resolves: RHEL-213313 32:9.16.23-0.22.10 - Fix CVE-2026-11622: reference-counted DNS cache slab headers - Resolves: RHEL-213396...

AZL-92940 CVE-2026-56416 affecting package unbound for versions less than 1.25.2-1

In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as 'datstart + dnamevaliddatstart, ...' and passes it straight to 'querydnametolower'...

AZL-92931 CVE-2026-44690 affecting package unbound for versions less than 1.25.2-1

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...