ldns security update

An update is available for ldns. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The ldns packages contain a library with the aim to simplify DNS programming in...

ldns security update

An update is available for ldns. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The ldns packages contain a library with the aim to simplify DNS programming in ...

Important: Red Hat Security Advisory: ldns security update

An update for ldns is now available for Red Hat Enterprise Linux 10. 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 the...

ldns: ldns: Off-path poisoning attacks due to insufficient query-response matching

A flaw was found in ldns. When applications use ldns as a resolver over User Datagram Protocol UDP, it fails to properly match the query's destination address and port with the response's source address and port. Additionally, the query ID and question are not matched with the response. This...

Important: Red Hat Security Advisory: ldns security update

An update for ldns 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 the...

ldns: ldns: Off-path poisoning attacks due to insufficient query-response matching

A flaw was found in ldns. When applications use ldns as a resolver over User Datagram Protocol UDP, it fails to properly match the query's destination address and port with the response's source address and port. Additionally, the query ID and question are not matched with the response. This...

CVE-2026-54478

A flaw was found in Unbound. When Unbound is configured to listen on a proxy-protocol port with DNS cookies enabled, it incorrectly computes the server cookie using the proxy's network address instead of the actual client's address. This vulnerability allows an off-path attacker to harvest a vali...

CVE-2026-54478

In NLnet Labs Unbound 1.18.0 up to and including 1.25.1, when Unbound listens on a 'proxy-protocol-port' interface with 'answer-cookie: yes', the RFC 9018 server-cookie SipHash is computed over the proxy's wire address instead of the PROXYv2-declared client. One server cookie obtained through a...

EUVD-2026-47678

In NLnet Labs Unbound 1.18.0 up to and including 1.25.1, when Unbound listens on a 'proxy-protocol-port' interface with 'answer-cookie: yes', the RFC 9018 server-cookie SipHash is computed over the proxy's wire address instead of the PROXYv2-declared client. One server cookie obtained through a...

CVE-2026-54478

In NLnet Labs Unbound 1.18.0 up to and including 1.25.1, when Unbound listens on a 'proxy-protocol-port' interface with 'answer-cookie: yes', the RFC 9018 server-cookie SipHash is computed over the proxy's wire address instead of the PROXYv2-declared client. One server cookie obtained through a...

CVE-2026-54478 DNS Cookie bypass when combined with proxy-protocol use

In NLnet Labs Unbound 1.18.0 up to and including 1.25.1, when Unbound listens on a 'proxy-protocol-port' interface with 'answer-cookie: yes', the RFC 9018 server-cookie SipHash is computed over the proxy's wire address instead of the PROXYv2-declared client. One server cookie obtained through a...

PT-2026-63386

Name of the Vulnerable Software and Affected Versions NLnet Labs Unbound versions 1.18.0 through 1.25.1 Description When the software listens on a 'proxy-protocol-port' interface with answer-cookie: yes, the RFC 9018 server-cookie SipHash is computed using the proxy's wire address rather than the...

CVE-2026-10846

A flaw was found in ldns. When applications use ldns as a resolver over User Datagram Protocol UDP, it fails to properly match the query's destination address and port with the response's source address and port. Additionally, the query ID and question are not matched with the response. This...

SUSE CVE-2026-10846

NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as stub resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of t...

Linux Distros Unpatched Vulnerability : CVE-2026-10846

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as stub resolver over UDP, lacks matching the query destination address and...

FreeBSD : FreeBSD -- Insufficient response validation in the ldns stub resolver (fc0c7763-6477-11f1-958d-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the fc0c7763-6477-11f1-958d-bc241121aa0a advisory. When used as a stub resolver over UDP, ldns failed to verify that a received response belonged to the...

CVE-2026-10846

NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as stub resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of t...

CVE-2026-10846

NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as stub resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of t...

EUVD-2026-35991

NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as stub resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of t...

CVE-2026-10846

CVE-2026-10846 affects nlnts ldns used as a stub resolver over UDP. FreeBSD advisories confirm that ldns failed to verify response provenance (source IP/port, transaction ID, and question matching), enabling off‑path spoofing of UDP responses and arbitrary data delivery to programs using ldns (e....