Executive Summary Node.js has fixed CVE-2026-111497, a Brotli decoder flaw that can permit remote code execution, in 22.23.4, 24.22.1, and 26.12.1, but upgrading at scale is slow. In Qualys telemetry, only 42,000 of roughly 3 million Node.js installations have been patched, and 1.7 million run end-of-life lines that will never receive a fix. In the […]

A vulnerability in Brotli, Google’s widely used open-source compression library, is putting a broad range of software at risk. About CVE-2026-111497 Alternatively known as “Node2Shell”, “Broccoli2Shell” and “Brotli2Shell”, CVE-2026-111497 is a remotely exploitable out-of-bounds write flaw that gained widespread attention after Node.js publicly disclosed it on October 21, 2026. “An attacker who can supply Brotli data that an application decompresses with node:zlib can corrupt process memory, which can lead to a crash, disclosure of process … More → The post Brotli bug reaches far beyond Node.js (CVE-2026-111497) appeared first on Help Net Security .

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code (CVE-2023-4863), bypass authentication (CVE-2026-16436 and CVE-2026-16437), or perform arbitrary operations (CVE-2026-16438), resulting in information disclosure, tampering with, destruction, or deletion of information, and a denial-of-service (DoS) condition of the system. The following versions of Mitsubishi Electric GENESIS, GENESIS64, ICONICS Suite, Hyper Historian, AnalytiX, MobileHMI, IoTWorX, MC Works64, GENESIS32 and BizViz are affected: Mitsubishi Electric GENESIS64 >=10.97|<=10.97.2 (CVE-2023-4863) Mitsubishi Electric ICONICS Suite >=10.97|<=10.97.2 (CVE-2023-4863) Mitsubishi Electric GENESIS <=11.03 (CVE-2026-16436, CVE-2026-16437) Mitsubishi Electric GENESIS64 <=10.97.3 (CVE-2026-16436, CVE-2026-16437, CVE-2026-16438) Mitsubishi Electric ICONICS Suite <=10.97.3 (CVE-2026-16436, CVE-2026-16437, CVE-2026-16438) Mitsubishi Electric Hyper Historian <=10.97.3 (CVE-2026-16436, CVE-2026-16437, CVE-2026-16438) Mitsubishi Electric AnalytiX <=10.97.3 (CVE-2026-16436, CVE-2026-16437, CVE-2026-16438) Mitsubishi Electric MobileHMI <=10.97.3 (CVE-2026-16436, CVE-2026-16437, CVE-2026-16438) Mitsubishi Electric IoTWorX <=10.97.3 (CVE-2026-16436, CVE-2026-16437) Mitsubishi Electric MC Works64 vers:all/* (CVE-2026-16436, CVE-2026-16437, CVE-2026-16438) Mitsubishi Electric GENESIS32 vers:all/* (CVE-202...

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-48356 Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type Vulnerability CVE-2026-111497 Google Brotli Unchecked Return Value Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise.  Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied.  While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities . CISA will continue to add vulnerabilities to the catalog that meet the specified criteria .&nb...

Google Brotli contains an unchecked return value vulnerability that allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream.

PHP has rebuilt its official Windows packages for PHP 8.2 through 8.5 to fix CVE-2026-111497, a flaw in the Brotli compression library that the packages include. The flaw can let an attacker corrupt memory and potentially run code. PHP says the flaw can be reached through the cURL extension when the extension decompresses HTTP responses automatically. cURL leaves that off by default, but

A memory-corruption flaw in Google's Brotli decoder sits in many programs that unpack Brotli-compressed data, among them Bun, the Python Brotli and brotlicffi packages, and Envoy proxies set up to decompress Brotli. Tracked as CVE-2026-111497, the flaw allows crafted compressed data to overwrite past the end of a buffer and corrupt a program's memory, potentially

Executive Summary On October 21, 2026, Node.js released fixes for 10 vulnerabilities across its three supported release lines: 22.x, 24.x, and 26.x. Four are rated High. The most severe, CVE-2026-111497, is an out-of-bounds write in the bundled Brotli decoder that Node.js says permits remote code execution. These flaws live in the Node.js runtime itself, not […]

Malicious Brotli data can make an application on an official build of Node.js run attacker-supplied code, security researchers at Imperva have demonstrated. Their "Node2Shell" proof of concept ran code on the official Node.js 24.22.0 image for Linux arm64, with no debugger or custom build, by feeding crafted data to the bundled Brotli decoder (CVE-2026-111497). Node.js disclosed the flaw

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added five security flaws to its Known Exploited Vulnerabilities (KEV) catalog, following their abuse by a China-linked threat actor known as Flax Typhoon. The vulnerabilities in question are listed below - CVE-2015-3306 (CVSS score: 10.0) - An improper access control vulnerability in ProFTPD that could allow

Advisory at a Glance  Title  Chinese Government-linked Cyber Threat Actors Combine Automated and Hands-on Hacking Tools to Steal Sensitive Data  Original Publication  October 8, 2026   Executive Summary  Chinese government-linked cyber threat actors, enabled by the Integrity Technology Group, are combining automated scanning tools, large-scale botnets, and hands-on exploitation techniques to target and steal sensitive data from organizations worldwide, including US critical infrastructure sectors. These actors exploit vulnerabilities by using scanning tools, cross-site scripting attacks, and password spraying on Microsoft Exchange servers, while establishing persistence through VPN software and exfiltrating emails and credentials using scripts. To help mitigate against this activity, organizations should prioritize disabling unused services and ports, sanitizing web application inputs to prevent injection attacks, implementing multifactor authentication for all services, and applying timely patches to reduce risks of compromise.  Affected Products  CVE-2014-6278   CVE-2015-3306   CVE-2015-5477   CVE-2016-3081   CVE-2019-11510   CVE-2021-22205   CVE-2021-3199   CVE-2023-22894   Key Actions  ...

ISC BIND contains a data processing errors vulnerability that could allow remote attackers to cause a denial of service via TKEY queries.