Security news
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Thu, October 22
Node.js Brotli Decoder Bug Could Allow Remote Code Execution in All Supported Versions
Node.js released security updates on October 21 for its three supported release lines, 22.x, 24.x and 26.x, fixing 10 flaws. The most serious is a bug in the Brotli decompression code that Node.js bundles, which the project says can allow remote code execution, meaning an attacker could run code of their choosing on the affected system. Each supported line has one fixed version:
Oracle Patches Over 1,200 Vulnerabilities With October 2026 CPU
Nearly 100 vulnerabilities have been assigned a critical severity rating and Fusion Middleware received the most patches. The post Oracle Patches Over 1,200 Vulnerabilities With October 2026 CPU appeared first on SecurityWeek .
侵入検知エンジン「Snort 3」に複数の脆弱性 - Cisco製品にも影響
Cisco Systemsは、オープンソースの侵入検知エンジン「Snort 3」に複数の脆弱性が判明したことを明らかにした。同社の複数製品にも影響があり、修正版を提供している。
Meta Ordered to Pay New Mexico $25 Billion for Deceiving Users About Privacy on Facebook
The $25 billion award far exceeds a $5 billion fine the Federal Trade Commission levied against Facebook in 2019. The post Meta Ordered to Pay New Mexico $25 Billion for Deceiving Users About Privacy on Facebook appeared first on SecurityWeek .
Ciscoのビデオ会議製品に深刻な脆弱性 - 修正版が公開
Cisco Systemsのビデオ会議関連製品「Cisco Expresswayシリーズ」に複数の脆弱性が判明した。リモートから認証なしに任意のコマンドを実行できる脆弱性も含まれる。
New QPACK Flaws Can Crash HTTP/3 Servers, Trigger Up to 4,000-Fold Memory Amplification
A remote attacker who has not logged in can crash many HTTP/3 web servers with a single connection, security firm FoxIO disclosed, releasing working proof-of-concept code. By sending a small batch of compressed HTTP headers that expands in memory to a much larger set, the attacker can force the server to use thousands of times more memory than it received, enough to run a default server
Someone Tried to Exploit PHP2Shell 4 Days Before the Vulnerabilities Were Publicly Disclosed
Amazon's Threat Intelligence team on Wednesday said it detected an attempt to exploit the newly disclosed PHP2Shell vulnerabilities on October 17, 2026, against its MadPot honeypot service, as the flaws come under broad exploitation in the wild following the release of the patches. "The exploit attempt originated from an IP address associated with a commercial anonymization network," CJ Moses,
PHP脆弱性、海外では“政府サイトごと停止”も オランダの電子認証やWikipedia関連サービスなどにも影響
プログラミング言語「PHP」の「緊急」レベルの脆弱性2件を巡り、海外では政府サイトを予防的に停止する動きが相次いだ。オランダは行政ポータルや認証基盤「DigiD」まで止め、フィンランドは政府の公開向けネットサービスを全て停止した。
「PHP」の深刻なRCE脆弱性「PHP2Shell」 - 悪用試行を観測
ウェブサイトをはじめ、広く活用されているプログラミング言語の「PHP」に、認証を必要とすることなくリモートからコードを実行できる深刻な脆弱性が見つかった問題で、すでに悪用を試みる攻撃も観測されている。実証コードも公開されており注意が必要だ。
China-Linked Hackers Use ARTEX AI Agents in ConnectWise Supply Chain Attack
Microsoft on Wednesday disclosed that a China state-aligned actor dubbed Storm-0940 was behind the recent supply chain compromise of the ConnectWise Cloud Backup application. During the incident, Storm-0940 used ARTEX, a Go-based agentic AI penetration testing framework that was made closed-source in the wake of its abuse against South Korean financial institutions, to speed up scanning and
Anthropic、Claudeでソフトウェアのアタックサーフェスを洗い出し・縮小する研究を公開 OpenSSHの修正にも貢献
Anthropicは、AIモデル「Claude」でソフトウェアの攻撃対象領域を分析・縮小する研究結果を公開した。オープンソース25件を分析し、設定矛盾など493件の問題を特定。「OpenSSH」では、認証前に到達可能なコードを約5分の1削減し、最新版に対策が反映された。手法は脆弱性検出サービス「OSS Scanner」に組み込まれる。
旅行ゲーム「ワールドクエスト」、PHP脆弱性で即日サービス終了 「古い仕組みのため対策とれず」
旅行ゲーム「ワールドクエスト」の運営は10月21日、同日をもってサービスを終了すると発表した。PHPの深刻な脆弱性に対し「古い仕組みのため十分な対策がとれない」とし、利用者の情報を守ることを理由に挙げた。
「スーパーの冷蔵設備が50度に」フランスの店舗襲ったサイバー攻撃の正体 弱点だらけだったセキュリティ対策
フランスのスーパーマーケットで大量の食品が廃棄される事態を招いた大規模なサイバー攻撃。狙われたのは、冷蔵・冷凍設備の遠隔管理システムだった。今回の事件は、同様のシステムのセキュリティ対策がほとんど置き去りにされてきた実態を見せつけている。
米当局、「PHP脆弱性」の即修正を勧告 - 困難ならオフラインに
米サイバーセキュリティインフラセキュリティ庁（CISA）は、プログラム言語「PHP」に深刻な脆弱性2件が見つかった問題で、修正プログラムをただちに適用するよう強く勧告した。更新が困難な場合は、インターネットへの公開を控えることを推奨している。
「GitLab」に深刻な脆弱性 - 旧ブランチにも修正を提供
ソフトウェア開発プラットフォーム「GitLab」に複数の脆弱性が判明した。深刻な脆弱性も含まれており、早急にアップデートするよう強く呼びかけている。
Meta on the spot for $25 billion under New Mexico privacy ruling
The Cambridge Analytica data privacy scandal from a decade ago is still weighing on Meta's finances.
Tech trio launches $10 million initiative to help under-resourced utilities bolster cybersecurity
Up to 500 under-resourced utilities will receive support in order to bolster their cybersecurity through a private sector initiative launched this week.
Critical GitLab Flaw (CVSS 10.0) Could Allow Unauthenticated RCE Across 12 Years of Releases
GitLab released fixes on October 21 for a flaw that lets an attacker run code on a self-managed server without logging in, and it affects every version of the software going back to 7.0, released in 2014. The fix matters even for administrators who patched nine days earlier: the October 12 update covered only versions 19.2 and later, and the new fixed versions sit one patch above it, so an
Democrat lawmakers say Russia is aiming to undermine party ahead of midterms
The pair stressed the latest update showed no country is pursuing the technically challenging effort to interfere with or hack into the country’s election infrastructure or tamper directly with votes.
LiteLLM Compromised in Supply Chain Attack Delivering Credential Stealer and Backdoor
The popular LiteLLM Python package has been compromised as part of a software supply chain attack that delivered a credential stealer and a backdoor, according to reports from SafeDep, Socket, StepSecurity, and Upwind. The compromise affects LiteLLM 1.107.0, distributed through PyPI wheels and Docker images. The Python package has since been quarantined on Python Package Index (PyPI), and the
PHP says AI review of critical bugs first sparked alarm in August, but signs surfaced in 2024
In a lengthy statement about two critical vulnerabilities, the PHP Foundation explained how one dated to 2024, how a recent third-party review by AI companies heightened attention on both, why it scrambled to post information earlier than planned.
Google Hardens Chrome Against ClickFix Attacks, Insecure HTTP Connections
Protections have been added against scams and social engineering, including new site warnings and server-side Gemini analysis. The post Google Hardens Chrome Against ClickFix Attacks, Insecure HTTP Connections appeared first on SecurityWeek .
PHP2Shell Patches Land as First Exploitation Attempts Hit Sensors
The two RCE bugs can be exploited against WordPress, Drupal, Joomla, and other popular applications. The post PHP2Shell Patches Land as First Exploitation Attempts Hit Sensors appeared first on SecurityWeek .
OpenAI's GPT-6 Agent Removed Safety Monitoring, Then Falsely Denied Doing So
OpenAI has revealed that two artificial intelligence (AI) agents powered by GPT-6.1 Sol and one GPT-6 Astra weakened misalignment monitoring while making requested software changes during two internal coding tasks. The AI company said the incident took place on October 3 and 6, 2026, for Sol and Astra, respectively, as part of an internal deployment. "A GPT-6.1 Sol agent repairing an
‘Context Bombs’ Cut AI Attack Success by Misleading Agents With Fake Targets
Deceptive prompts lure AI agents into decoys and dead ends, cutting attack success by up to 91% in tests and raising the cost of a successful attack 23-fold. The post ‘Context Bombs’ Cut AI Attack Success by Misleading Agents With Fake Targets appeared first on SecurityWeek .
Wed, October 21
「PHP」に2件の深刻なRCE脆弱性 - アップデートを公開
プログラム言語「PHP」に深刻な脆弱性2件が判明した。開発チームはセキュリティアップデートをリリースし、利用者に更新するよう強く呼びかけている。
Russian hackers teamed up to wipe data at Ukrainian grain firm
The Russian state-linked hacking group Sandworm collaborated with another threat actor to carry out a destructive cyberattack against a Ukrainian grain logistics company last year, researchers said Thursday.
Hundreds of websites taken offline as concern grows over two PHP vulnerabilities
The maintainers of the globally used PHP scripting language released patches for two vulnerabilities after alerting users that the bugs were severe.
PHP Issues Emergency Patches for Two Critical PHP2Shell RCE Flaws as Exploit Attempts Emerge
PHP has released emergency updates that fix two critical flaws in the language itself, letting an attacker without an account run code on a web server. The fixes are in PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35, and the PHP team says only updating fully protects a server. The flaws, together called PHP2Shell, sit in the PHP runtime, not in any application, so a site is exposed even when its own
Asymptote Labs Lands $5.5 Million Seed for AI Agent Runtime Security
Asymptote Labs raises $5.5M seed led by Tower Research Ventures to commercialize its Beacon AI agent runtime security platform. The post Asymptote Labs Lands $5.5 Million Seed for AI Agent Runtime Security appeared first on SecurityWeek .
Google Chrome Adds ClickFix Warnings to Stop Users From Running Malicious Commands
Google on Tuesday said it's rolling out improved safeguards in its Chrome browser to secure users against ClickFix attacks when Enhanced Protection is enabled. ClickFix is a popular social engineering technique in which bad actors trick users into copying and pasting malicious code directly into their computer's operating system, thereby bypassing conventional security controls. As part of
Memory Bugs Account for Most of Chrome’s 353 New Security Fixes
The update fixes 353 flaws, including 163 memory corruption and 125 use-after-free vulnerabilities. The post Memory Bugs Account for Most of Chrome’s 353 New Security Fixes appeared first on SecurityWeek .
OpenAI Agents Silenced Security Team Alerts, Removed Misalignment Monitor
In two internal incidents, agents read routine coding instructions as permission to weaken monitoring, and one gave a false answer about it. The post OpenAI Agents Silenced Security Team Alerts, Removed Misalignment Monitor appeared first on SecurityWeek .
China-Aligned Bronze Sandcastle Abuses Sandboxie DLL Sideloading to Deploy Backdoors
Cybersecurity researchers have disclosed details of a previously undocumented China-aligned threat cluster known as Bronze Sandcastle that has been observed targeting organizations in Asia and Africa since mid-2025. "The most distinctive technical marker for Bronze Sandcastle is its consistent use of Sandboxie DLL sideloading," Sophos security researcher Gabor Szappanos said in a post published
Generative AI Is Erasing Behavioral Tells, Weakening Behavior-Only Detection, Proofpoint Reports
Generative AI has changed what a malicious email looks like. Messages that once gave themselves away through clumsy wording, generic pretexts, and reused templates now arrive fluent, personalized, and unique to each recipient, and the behavioral signals email filters have relied on for years are fading as a result. Proofpoint shared several examples of the shift at its Protect 2026 conference.
Browsers Block eMudhra Intermediate CAs Over Recoverable Private Keys
The private keys associated with eight certificates were compromised, and root programs and trust stores are blocking them. The post Browsers Block eMudhra Intermediate CAs Over Recoverable Private Keys appeared first on SecurityWeek .
China Defends DeepSeek After US Ban of Its AI From Government Systems
The DHS said agencies should remove DeepSeek products as well as third-party products and services developed using DeepSeek from their IT systems. The post China Defends DeepSeek After US Ban of Its AI From Government Systems appeared first on SecurityWeek .
PHP2Shell: What Actually Protects You Before the 14:00 UTC PHP RCE Patch, and What Doesn't
You cannot fully block the two critical PHP flaws called PHP2Shell before today's fix, and the one setting being passed around as a workaround is not enough on its own, the security firm that suggested it now says. PHP will release the fix at 14:00 UTC on October 21 for two flaws it rates 9.2 out of 10, and has given no workaround of its own. Until you can install it, what lowers your
The Harness Is the Hard Part of Agentic Pentesting
An AppSec team can point an AI agent running on a general-purpose model at its own web apps with little setup. Sure, the model writes the attacks. But everything that makes those attacks safe to run against production and worth acting on afterward lives in the harness around the model. The harness is where the engineering in AI pentesting sits. The Hugging Face intrusion OpenAI disclosed in July
Attackers Hijacked Over 300 Tor Exit Relays to Intercept SSH Connections
Attackers took control of more than 300 Tor exit relays in early October and used them to redirect SSH connections to servers that stole login passwords, a researcher found. Exit relays are the last hop in a Tor circuit, where traffic leaves the network for its destination. Only a password login to an SSH server made through Tor between October 1 and 5, after accepting the interception
Chinese AI Model Writes More Hackable Code When Told It’s for US Contractor
Tasked with writing an application for a US defense contractor, the model made the code 19% more likely to be hackable. The post Chinese AI Model Writes More Hackable Code When Told It’s for US Contractor appeared first on SecurityWeek .
PHP2Shell: Two Unpatched Critical PHP RCE Flaws (CVSS 9.2) Trigger Emergency Security Alert
This story is developing and was written before PHP's scheduled 14:00 UTC release on October 21. Once the release is out, the affected and fixed versions below are confirmed by the official advisory. PHP will ship an out-of-cycle security release at 14:00 UTC today, October 21, for two critical vulnerabilities that its security team has rated 9.2 on the CVSS v4.0 scale but has not described. ⚡
著名ITサービス相次いで緊急メンテへ コドモン、シャドバ、BASE、さくらのレンタルサーバなど 「PHP」脆弱性に起因か
保育園向けSaaS「コドモン」、ゲーム「Shadowverse: Worlds Beyond」「さくらのレンタルサーバ」といった著名サービスが相次いで緊急メンテナンスに入ったり、同日午後11時ごろからのメンテナンスを予告したりしている。Web開発で広く使われるプログラミング言語「PHP」で緊急性の高い脆弱性が見つかった影響とみられる。
修正予告されたPHPの2件の深刻な脆弱性についてまとめてみた
2026年10月20日、PHPの開発元であるThe PHP Groupのセキュリティチームは、PHPの深刻な脆弱性2件を修正するセキュリティリリースを予告しました。ここでは関連する情報をまとめます。（開発元等から詳細情報が公開され次第更新します。） 開発元は何を予告したの? PHPのセキュリティチームは10月20日(協定世界時)、2件の critical な脆弱性を修正するセキュリティリリースを予告した。2件とも深刻度は CVSS v4.0 で 9.2(Critical)。リリースは10月21日14時(協定世界時、日本時間23時)の予定で、全てのPHP利用者に事前の準備を呼びかけた(出典: 1…
U.S. Orders DeepSeek Removed From Federal Civilian Systems, Bans New Purchases
U.S. federal civilian agencies must remove DeepSeek products from their information technology systems, along with any third-party products or services "developed using DeepSeek implementations," under a Department of Homeland Security order. They may also no longer buy information technology products or services from the Chinese AI developer or its affiliates Homeland Security Secretary
CISA Orders Federal Agencies to Patch Exploited Plex2Shell, Siemens, and SiteGuard Flaws
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added four vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, including four vulnerabilities impacting Plex Media Server that's collectively called Plex2Shell. The vulnerabilities are listed below - CVE-2026-96652 (CVSS score: 5.3) - Plex Media Server Server-Side Request Forgery (SSRF)
Oracle、四半期定例パッチで1295件を修正 - 深刻な脆弱性も
Oracleは現地時間2026年10月20日、四半期ごとに提供している「Critical Patch Update（CPU）」を公開した。
PHP2Shell: Mass Exploitation Looms for Leaked Critical PHP Flaws
Tracked as CVE-2026-109618 and CVE-2026-109619, the bugs could potentially lead to unauthenticated remote code execution. The post PHP2Shell: Mass Exploitation Looms for Leaked Critical PHP Flaws appeared first on SecurityWeek .
Hackers Hid Vasilek Backdoor in VMware Tools During 2-Year Russian Healthcare Intrusion
A Belarus-aligned hacktivist group spent nearly two years within the network of a Russian healthcare organization. According to a report published by Russian cybersecurity firm Solar, the activity has been attributed to a threat cluster dubbed Partisan Zmiy, which is also known as the Cyber Partisans. Known to be active since at least 2020, the group has a track record of striking industrial
Hijacked Developer Account Used to Plant Stealer in OVHcloud CLI
Researchers say the developer’s account was compromised in March with a GlassWorm-linked loader. The post Hijacked Developer Account Used to Plant Stealer in OVHcloud CLI appeared first on SecurityWeek .