CVE-2026-50045

'max-global-quota' reset by DNSSEC validation restarts

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a single client query for a deeply nested name under a DNSSEC-signed parent can cause Unbound to send more upstream packets per client query than the configured 'max-global-quota'. This effectively bypasses a security configuration that limits upstream amplification traffic.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

CVE-2026-50243

'response-ip'/'rpz' can rewrite BOGUS answers instead of returning SERVFAIL

In NLnet Labs Unbound 1.6.2 up to and including 1.25.1, when Unbound is configured with the 'respip' module in front of the validator together with a 'response-ip' redirect rule or an RPZ file with an RPZ-IP trigger, the rewriting handler does not check the security status of the upstream answer and can instead rewrite a BOGUS A/AAAA answer to point to an operator's configured IP. If the validator finds an expired or otherwise invalid RRSIG on an answer whose A record falls within a 'response-ip'/RPZ configuration, the answer is still rewritten and given a hard coded security level of INSECURE. This results in the client receiving an INSECURE NOERROR reply rewritten by the operator's configured IP. A malicious actor can exploit the possible poisonous effect by spoofing a BOGUS A/AAAA answer that falls inside the operator's configured subnet rewrites. Such DNSSEC protected answers are then insecurely redirected to the operator's configured target.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

CVE-2026-50248

BOGUS configured primary hostname accepted for XFR in auth/rpz zones

In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, when an auth/rpz zone has a configured primary hostname that resolves to BOGUS A/AAAA, it is still considered as a possible XFR endpoint. A malicious actor that can spoof the hostname's A/AAAA record (no valid RRSIG required) becomes the zone's XFR primary and can replaces the entire zone/the resolver's entire response policy.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

CVE-2026-50251

Attacker supplied '0.0.0.0'/'::' glue triggers defensive full-cache flush

In NLnet Labs Unbound up to and including version 1.25.1, when 'unwanted-reply-threshold' is enabled (set to any value greater than zero), glue records of 0.0.0.0/::0 can short-circuit Unbound, on systems that can direct such traffic, by issuing DNS queries and receiving seemingly unwanted replies since the remote IP does not match the original source IP of 0.0.0.0/::0. This behavior keeps on looping for the glue records and pushing the counter to the configured 'unwanted-reply-threshold' that triggers a defensive cache clear. A malicious actor who controls a delegation that returns in-bailiwick glue of 0.0.0.0/::0 can drive the counter to the limit of 'unwanted-reply-threshold' to the threshold and trigger a cache clean of the message and rrset caches; at will, indefinitely, without sending a single spoofed packet. The iterator uses the 0.0.0.0/::0 glue, and a system that can route this (e.g., Linux kernel routes the datagram over loopback), Unbound's own listener answers from 127.0.0.1. Because of the mismatch of 0.0.0.0 and 127.0.0.1, in this example, Unbound accounts the reply as an unwanted (probably spoofed) answer. The counter resets to zero on every cache flush, so the attack loops forever.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

CVE-2026-50252

Possible cache poisoning attack by mapping source port population per thread

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined. The vulnerability arises when the load balancing policy is consistent with respect to the incoming source UDP port and IP address while heavily depending on the incoming source UDP port as a randomization source. When the SO_REUSEPORT configuration option is enabled ('so-reuseport: yes') in Unbound (by default), it meets these conditions, making it vulnerable for DNS cache poisoning attacks. Upon startup, Unbound randomly partitions the available UDP source port space into disjoint subsets of (almost) equal size, assigning each subset to a specific worker thread. When an incoming DNS query is received, the kernel’s SO_REUSEPORT load balancing mechanism deterministically assigns the query to a socket associated with a particular thread. All outgoing DNS queries generated during the resolution of that request use source ports selected exclusively from the port subset assigned to the corresponding thread. Since these port subsets are disjoint across threads, the source port observed in a resolver’s outgoing query to an authoritative name server serves as a reliable indicator of the worker thread that processed the original client query. A malicious actor can acquire the mapping between incoming UDP source ports (for a given fixed source IP address) and Unbound worker threads and leverage it to conduct DNS cache poisoning attacks by effectively lowering the random port population per thread.

CVSS 4.0 · 5.7 Medium EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

CVE-2026-52863

Memory corruption could lead to crash and denial of service

In NLnet Labs Unbound 1.25.0 up to and including 1.25.1, a fix that makes the 'respip' and 'dns64' modules work together, creates a shallow copy of the view name in effect that could lead to memory corruption if the owner of the original view name is jostled out when Unbound is under pressure. Unbound needs to be configured with one of 'respip'/'rpz' modules, together with a module that can attach subqueries (respip CNAME redirection, dns64, subnetcache) and a configured 'access-control-view' while Unbound is under pressure so that joslte logic kicks in and starts dropping slow queries. The subquery is getting a shallow copy of the view name and if the super query which owns the view name is jostled out, memory corruption can occur. Likelihood of a crash is low, since it relies heavily on the underlying memory allocator and the memory layout. Debug memory builds (e.g., ASAN) that catch the free terminate the server.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

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 given proxy node therefore validates for every PROXYv2-declared source behind that node. On a UDP+proxy-protocol front, an off-path attacker can harvest one cookie with a single legitimate query, then replay it under any spoofed source and pass DNS Cookie checks that were deployed to defeat this in the first place.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs Redhat

Products

Unbound Hummingbird

CVE-2026-55708

Privacy/configuration issue when adding local data in views through 'unbound-control'

In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, the 'view_local_data' and 'view_local_datas' commands of 'unbound-control' create a bare local zones tree for an already configured named view when the view is configured with no local data to begin with. However, the creation through the control interface omits adding the default-protected zones (e.g., RFC 1918 reverse, AS112 zones, .onion, .localhost). Once the local zone tree exists without the defaults, every query for a default-protected name from a client mapped to that view escapes to the public DNS via the iterator instead of being answered locally, bypassing local policy expectations.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

CVE-2026-55717

'serve-expired-client-timeout' and 'response-ip' CNAME redirect could lead to a crash

In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: <net> redirect' /'response-ip-data: <net> CNAME <target>' rule (or the RPZ 'rpz-cname-override' equivalent), a remote client who controls any delegated domain can crash the daemon. The serve-expired-client-timeout callback runs a two-pass loop to chase the respip-generated CNAME alias; on the second pass it resets 'alias_rrset' but not 'partial_rep'. Later, this inconsistency leads to a NULL pointer dereference and an eventual crash. A malicious actor can exploit the vulnerability by controlling any zone that replies with an A/AAAA record that falls inside the configured response-ip/rpz subnet. By delaying the answer when the previous record has expired, the vulnerable path of 'serve-expired-client-timeout' is taken leading to denial of service via the server crash.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Nlnetlabs

Products

Unbound

CVE-2026-13190

PersistenceFramework Unsafe Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, a deserialization vulnerability in the persistence utilities allows unsafe type instantiation from attacker-influenced persisted state, which can lead to remote code execution.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Progress

Products

Telerik Ui For Asp.net Ajax

CVE-2026-13192

RadEditor PDF Export SSRF Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, insufficient validation of content submitted to the RadEditor PDF export feature may allow an authenticated attacker to trigger server-side requests to arbitrary hosts, resulting in outbound network connections and potential exposure of Windows authentication credentials.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Progress

Products

Telerik Ui For Asp.net Ajax

CVE-2026-14865

XXE Denial of Service via RadLayoutBuilder Client State in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, the internal LayoutBuilder control processes client-state XML without disabling DTD processing, allowing unauthenticated denial of service via recursive XML entity expansion.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Progress

Products

Telerik Ui For Asp.net Ajax

CVE-2026-14932

Unauthenticated File Read and Deletion via Hardcoded Encryption Key in RadChart

In Progress® Telerik® UI for AJAX prior to v2026.2.708, the obsolete RadChart component's ChartImage.axd handler is vulnerable to unauthenticated file read and deletion of image-extension files within the application directory.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Progress

Products

Telerik Ui For Asp.net Ajax

CVE-2026-62144

Management Authentication Bypass and Privilege Escalation

An authentication bypass vulnerability in Check Point Security Management and Multi-Domain Security Management allows an unauthenticated remote attacker to execute administrative commands on the Management Server. Successful exploitation may also allow command execution on managed Security Gateways. Exploitation requires network access to the Management Server without firewall protection or a configuration that does not restrict Trusted Clients.

CVSS 3.1 · 9.1 Critical EPSS 1.0% KEV · Not listed

Vendors

Checkpoint

Products

Multi-domain Management Quantum Security Management

CVE-2026-48029

libheif: heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.19.0 through 1.21.2 have a heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow. Version 1.22.0 fixes the issue.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Struktur

Products

Libheif

CVE-2026-21723

CVE-2026-21723 Record

The alertmanager templates test endpoint (/api/alertmanager/grafana/config/api/v1/templates/test) can execute templates with no memory limits. Mass-executing templates in a short period causes OOM and crashes the Grafana service. The endpoint requires very low privileges and is exploitable with anonymous access enabled.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Grafana

Products

Grafana

CVE-2026-7120

@fastify/static vulnerable to Authorization Bypass via Non-Canonical URL Paths

@fastify/static evaluates the allowedPath callback before normalizing dot segments and duplicate path separators in the pathname used for file resolution. Versions up to and including 10.1.1 are affected. An unauthenticated attacker can bypass allowedPath restrictions by requesting equivalent non-canonical pathnames, causing files that were intended to be denied to be served anyway. The bypass does not allow access outside the configured static root by itself, it defeats path-based filtering only. The issue is patched in @fastify/static 10.1.2.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Fastify

Products

Fastify-static

CVE-2026-43721

webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data

This issue was addressed through improved state management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website may be able to silently hijack clipboard data.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Ios And Ipados Ipados Iphone Os and 2 more

CVE-2026-43707

webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash

A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected process crash.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Ios And Ipados Ipados Iphone Os and 2 more

CVE-2026-43732

webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information

A path handling issue was addressed with improved validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may disclose sensitive user information.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Ios And Ipados Ipados Iphone Os and 2 more