AlmaLinux 9.2 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (ALMALINUX9.2:CLSA-2025:1736503760)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1736503760 advisory. - NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large RRsets that it needs t...

Rocky Linux 9 [CIQ] Security Update: python3-unbound / python3-unbound-debuginfo / unbound / etc (crlsa-2024_11232)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202411232 advisory. unbound: Unbounded name compression could lead to Denial of Service CVE-2024-8508 Tenable has extracted the preceding description block directly from the CIQ...

Rocky Linux 9 [CIQ] Security Update: python3-unbound / python3-unbound-debuginfo / unbound / etc (crlsa-2025_8197)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20258197 advisory. unbound: Unbounded name compression could lead to Denial of Service CVE-2024-8508 Tenable has extracted the preceding description block directly from the CIQ securi...

CentOS Linux 7 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python (CENTOS7:CLSA-2025:1765997462)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2025:1765997462 advisory. - NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large RRsets that it needs to...

Rocky Linux 10.0 [CIQ] Security Update: python3-unbound / python3-unbound-debuginfo / unbound / etc (crlsa-2025_8047)

The Rocky Linux 10.0 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20258047 advisory. unbound: Unbounded name compression could lead to Denial of Service CVE-2024-8508 Tenable has extracted the preceding description block directly from the CIQ...

CentOS Linux 8 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (CENTOS-STREAM8:CLSA-2026:1769424072)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1769424072 advisory. - NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large RRsets that it nee...

EulerOS Virtualization 2.12.1 : unbound (EulerOS-SA-2026-3623)

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unboun...

EulerOS Virtualization 2.12.0 : unbound (EulerOS-SA-2026-3677)

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unboun...

EulerOS Virtualization 2.11.0 : unbound (EulerOS-SA-2026-3566)

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : DISPUTE NOTE: this issue does not pose a security risk as it according to analysis by the original software developer, NLnet Labs...

GHSA-MRG3-QVQR-JW29 CoreDNS: Unauthenticated memory exhaustion in custom transports

Summary CoreDNS parses attacker-controlled DNS section counts before validating them on DNS-over-HTTPS DoH and DoH3, DNS-over-QUIC DoQ, and DNS-over-gRPC listeners. An unauthenticated client can use DNS name compression to make one 65,533-byte request allocate more than 10 MiB while it is unpacke...

CoreDNS: Unauthenticated memory exhaustion in custom transports

Summary CoreDNS parses attacker-controlled DNS section counts before validating them on DNS-over-HTTPS DoH and DoH3, DNS-over-QUIC DoQ, and DNS-over-gRPC listeners. An unauthenticated client can use DNS name compression to make one 65,533-byte request allocate more than 10 MiB while it is unpacke...

CVE-2026-82399

A flaw was found in CoreDNS. An unauthenticated remote attacker can exploit this vulnerability by sending specially crafted DNS requests over custom transports, such as DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC. By using DNS name compression and excessive section counts, t...

CVE-2026-82399 CoreDNS: Unauthenticated memory exhaustion in custom transports

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC request paths in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack on attacker-controlled DNS section counts before...

CVE-2026-82399 CoreDNS: Unauthenticated memory exhaustion in custom transports

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC request paths in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack on attacker-controlled DNS section counts before...

EulerOS 2.0 SP12 : unbound (EulerOS-SA-2026-3391)

According to the versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unbound needs to...

EulerOS 2.0 SP12 : unbound (EulerOS-SA-2026-3316)

According to the versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unbound needs to...

Unity Linux 20.1070e Security Update: unbound (UTSA-2026-035859)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-035859 advisory. NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unbound needs to perform name compression...

EulerOS Virtualization 2.13.0 : unbound (EulerOS-SA-2026-3243)

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unboun...

EulerOS Virtualization 2.13.1 : unbound (EulerOS-SA-2026-3203)

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unboun...

K000162877: NLnet Labs Unbound vulnerability CVE-2026-44390

Security Advisory Description NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unbound needs to perform name compression for. Malicious upstream responses with very large RRsets with records that don't share a suffix above...