CVE-2026-23869

A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4. The vulnerability is triggered ...

CVE-2026-23869

The CVE-2026-23869 entry describes a Denial-of-Service vulnerability in React Server Components affecting react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. A specially crafted HTTP request to Server Function endpoints can cause the server to experience excessive C...

brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion

A flaw was found in the brace-expansion component. This denial of service DoS vulnerability allows a remote attacker to provide specially crafted input containing repeated numeric brace ranges. This input causes the library to attempt an unbounded expansion, consuming excessive CPU and memory...

SUSE-SU-2026:1209-1 Security update for bind

This update for bind fixes the following issues: - CVE-2026-1519: high CPU load during insecure delegation validation due to excessive NSEC3 iterations bsc1260805...

UBUNTU-CVE-2026-35406

Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1...

CVE-2026-35406 Aardvark-dns has incorrect error handling for malformed tcp packets

Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1...

Denial of Service (DoS)

Overview rack is a minimal, modular and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it unifies and distills the API for web servers, web frameworks, and software in between the so-called middleware into a singl...

Security Bulletin: IBM Cloud Pak for Data System (CPDS 1.0) is affected by multiple vulnerabilities due to urllib3

Summary The urllib3 library is used by IBM Cloud Pak for Data System 1.0 to provide HTTP client functionality for Python applications. Multiple vulnerabilities affect urllib3. CVE-2025-66418 involves allocation of resources without limits or throttling. CVE-2025-66471 and CVE-2026-21441 both rela...

Amazon Linux 2023 : bind, bind-chroot, bind-devel (ALAS2023-2026-1533)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1533 advisory. If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there...

Excessive NSEC3 iterations cause high CPU load during insecure delegation validation

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Linux Distros Unpatched Vulnerability : CVE-2026-27859

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery...

CVE-2026-27859

A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU time. Use MTA capabilities to limit RFC 2231 MIME parameters in mail messages, or upgrade to fixed...

UBUNTU-CVE-2026-27859

A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU time. Use MTA capabilities to limit RFC 2231 MIME parameters in mail messages, or upgrade to fixed...

CVE-2026-20084

A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause BOOTP packets to be forwarded between VLANs, resulting in a denial of service DoS condition. This vulnerability is due to improper handling of BOOTP packets on Cisco...

CVE-2026-20084

A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause BOOTP packets to be forwarded between VLANs, resulting in a denial of service DoS condition. This vulnerability is due to improper handling of BOOTP packets on Cisco...

ALPINE-CVE-2026-1519

If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries see:...

DEBIAN-CVE-2026-1519

If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries see:...

CVE-2026-1519 Excessive NSEC3 iterations cause high CPU load during insecure delegation validation

If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries see:...

CVE-2026-1519

Impact: BIND 9 DNSSEC resolvers may consume excessive CPU when validating DNSSEC in a malicious zone. Affected product: BIND 9 series (versions 9.11.0–9.16.50, 9.18.0–9.18.46, 9.20.0–9.20.20, 9.21.0–9.21.19, plus 9.11.3-S1–9.16.50-S1, 9.18.11-S1–9.18.46-S1, and 9.20.9-S1–9.20.20-S1). Root cause: ...

PT-2026-27790

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description A flaw exists in the DHCP snooping feature that may allow a remote attacker to forward BOOTP packets between VLANs, leading to a denial of service DoS. This is caused by imprope...