SUSE CVE-2026-35501

When NLnet Labs Unbound 1.0.1 up to and including version 1.26.1 is configured with both a root trust anchor and an additional 'trust-anchor:' for an island-of-security zone whose parent is provably insecure under the root chain, a malicious actor with a forged NSEC reply with the SOA bit cleared...

AZL-109821 CVE-2026-35501 affecting package unbound 1.26.1-1

When NLnet Labs Unbound 1.0.1 up to and including version 1.26.1 is configured with both a root trust anchor and an additional 'trust-anchor:' for an island-of-security zone whose parent is provably insecure under the root chain, a malicious actor with a forged NSEC reply with the SOA bit cleared...

CVE-2026-35501

When NLnet Labs Unbound 1.0.1 up to and including version 1.26.1 is configured with both a root trust anchor and an additional 'trust-anchor:' for an island-of-security zone whose parent is provably insecure under the root chain, a malicious actor with a forged NSEC reply with the SOA bit cleared...

CVE-2026-35501

When NLnet Labs Unbound 1.0.1 up to and including version 1.26.1 is configured with both a root trust anchor and an additional 'trust-anchor:' for an island-of-security zone whose parent is provably insecure under the root chain, a malicious actor with a forged NSEC reply with the SOA bit cleared...

EUVD-2026-107151

When NLnet Labs Unbound 1.0.1 up to and including version 1.26.1 is configured with both a root trust anchor and an additional 'trust-anchor:' for an island-of-security zone whose parent is provably insecure under the root chain, a malicious actor with a forged NSEC reply with the SOA bit cleared...

PT-2026-120506

Name of the Vulnerable Software and Affected Versions NLnet Labs Unbound versions 1.0.1 through 1.26.1 Description A flaw exists when the software is configured with both a root trust anchor and an additional trust-anchor: for an island-of-security zone whose parent is provably insecure under the...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: unbound (UTSA-2026-130094)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-130094 advisory. In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and possible remote code execution...

CentOS Linux 7 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python Multiple Vulnerabilities (CENTOS7:CLSA-2026:1791327169)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1791327169 advisory. - In NLnet Labs Unbound up to and including 1.26.0, a 255 length query name with a large TCP response can lead to a heap buffer overflow...

Rocky Linux 8 [CIQ] Security Update: bind / bind-chroot / bind-debuginfo / bind-debugsource / bind-devel / etc Multiple Vulnerabilities (crlsa-2024_1782)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20241782 advisory. bind9: Parsing large DNS messages may cause excessive CPU load CVE-2023-4408 bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator CVE-2023-50387...

CentOS Linux 8 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (CENTOS-STREAM8:CLSA-2026:1779534149)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1779534149 advisory. - NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service...

AlmaLinux 9.2 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (ALMALINUX9.2:CLSA-2026:1779533909)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1779533909 advisory. - NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and...

CentOS Linux 7 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python (CENTOS7:CLSA-2026:1779467345)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1779467345 advisory. - NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and...

Rocky Linux 9.6 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-dracut / etc (ALMALINUX9.6:CLSA-2026:1790264968)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1790264968 advisory. - In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and...

CentOS Linux 8 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (CENTOS-STREAM8:CLSA-2026:1790264021)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1790264021 advisory. - In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and...

AlmaLinux 9.6 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-dracut / etc (ALMALINUX9.6:CLSA-2026:1790264968)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1790264968 advisory. - In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and...

AlmaLinux 9.6 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-dracut / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1785417704)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1785417704 advisory. - DISPUTE NOTE: this issue does not pose a security risk as it according to analysis by the original software developer, NLnet Labs...

Rocky Linux 8 [CIQ] Security Update: python3-unbound / python3-unbound-debuginfo / unbound / etc Multiple Vulnerabilities (crlsa-2026_24365)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202624365 advisory. unbound: Heap overflow and crash with multiple nsid, cookie, padding EDNS options CVE-2026-42944 unbound: Unbound DNSSEC Validator Denial of Service via...

CentOS Linux 7 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python Multiple Vulnerabilities (CENTOS7:CLSA-2026:1779978016)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1779978016 advisory. - NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists o...

Rocky Linux 9 [CIQ] Security Update: bind / bind-chroot / bind-debuginfo / bind-debugsource / bind-devel / etc Multiple Vulnerabilities (crlsa-2024_2551)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20242551 advisory. bind: Preparing an NSEC3 closest encloser proof can exhaust CPU resources CVE-2023-50868 bind: KeyTrap - Extreme CPU consumption in DNSSEC validator...

Rocky Linux 8 [CIQ] Security Update: bind / bind-chroot / bind-debuginfo / bind-debugsource / bind-devel / etc Multiple Vulnerabilities (crlsa-2024_3271)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20243271 advisory. bind9: Parsing large DNS messages may cause excessive CPU load CVE-2023-4408 bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator CVE-2023-50387...