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HIGH: CRITICAL — Brotli decoder RCE (CVE-2026-111497) affects Node.js, Python, Bun globally◆HIGH: HIGH — Microsoft releases 1,400+ patches; critical Windows flaws included◆HIGH: HIGH — FBI arrests ShinyHunters ransomware negotiation firm co-founder◆HIGH: HIGH — LiteLLM Python package poisoned via leaked GitHub master key◆HIGH: HIGH — Collabora Online and Arista VCO exploited in wild; CISA KEV updated◆HIGH: PHP RCE (CVE-2026-109618/109619) — 70% of websites affected; active exploitation confirmed◆HIGH: Third unpatched PHP RCE (CVE-2026-115560) disclosed; mitigations only, no patch◆HIGH: BlackX UEFI bootkit bypasses Secure Boot; targets Central Asian diplomatic organizations◆HIGH: CRITICAL — Brotli decoder RCE (CVE-2026-111497) affects Node.js, Python, Bun globally◆HIGH: HIGH — Microsoft releases 1,400+ patches; critical Windows flaws included◆HIGH: HIGH — FBI arrests ShinyHunters ransomware negotiation firm co-founder◆HIGH: HIGH — LiteLLM Python package poisoned via leaked GitHub master key◆HIGH: HIGH — Collabora Online and Arista VCO exploited in wild; CISA KEV updated◆HIGH: PHP RCE (CVE-2026-109618/109619) — 70% of websites affected; active exploitation confirmed◆HIGH: Third unpatched PHP RCE (CVE-2026-115560) disclosed; mitigations only, no patch◆HIGH: BlackX UEFI bootkit bypasses Secure Boot; targets Central Asian diplomatic organizations◆

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HIGH/ OCTOBER 25, 2026TODAY’S BRIEFING — #219

Brotli RCE spans Node.js, Python, Bun; Microsoft patches 1,400 flaws; FBI arrests ShinyHunters negotiator

Google's Brotli decoder flaw (CVE-2026-111497) enables RCE across Node.js, Python, Bun, and Envoy proxies. Microsoft released 1,400+ patches. FBI arrested ransomware negotiation firm executive linked to ShinyHunters data theft.

CVE-2026-111497Google Brotli Decoder — Memory-corruption RCE in decoder; affects Node.js, Bun, Python, Envoy proxies CVE-2026-108398Microsoft Windows — Critical Windows flaw included in 1,400-patch batch CVE-2026-96951Microsoft Outlook Web — Critical Windows flaw included in 1,400-patch batch CVE-2026-110447Collabora Online Built-in CODE Server — OS command injection / RCE; actively exploited; CISA KEV added 2026-10-23

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219 briefings published

31 vuln reports

59 tools indexed

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Critical vulnerabilities

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CVE	Product	CVSS	Exploited	Patch
CVE-2026-16812	Arista VeloCloud Orchestrator	10	KEV	advisory
CVE-2026-93952	Arista VeloCloud Orchestrator	10	KEV	advisory
CVE-2026-105134	Ahsay AhsayCBS	10	KEV	—
CVE-2015-3306	Proftpd (also: Fedoraproject, Debian)	10	KEV	—
CVE-2026-5430	WSO2 Multiple Products	10	KEV	advisory

KEV = listed in CISA catalog · IN WILD = active exploitation reported · PoC = public exploit code

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HighOctober 25, 2026

Brotli RCE spans Node.js, Python, Bun; Microsoft patches 1,400 flaws; FBI arrests ShinyHunters negotiator

Zero-DaySupply ChainAPTVuln ExploitTechnologyGovernment

HighOctober 24, 2026

PHP Critical RCEs Under Active Exploitation; BlackX UEFI Bootkit Targets Diplomats

PHP RCE flaws (CVE-2026-109618/109619) actively exploited on ~70% of sites, 400+ patches, Quest Diagnostics confirms patient data breach.

Vuln ExploitZero-DayData BreachAPTTechnologyGovernmentHealthcare

CriticalOctober 23, 2026

Arista VeloCloud zero-day exploited; Railway, Capcom breaches; LiteLLM supply chain attack

Arista Networks' VeloCloud Orchestrator zero-day SQL injection actively exploited; Railway platform warns of secret exposure; Capcom confirms 11.7M account breach; LiteLLM release pipeline compromised with info-stealer malware.

Zero-DaySupply ChainData BreachCredential TheftTechnologyRetailFinance

MediumOctober 22, 2026

Critical RCE exploits: PHP, GitLab, LiteLLM under active attack

PHP (70% of websites), GitLab (CVSS 10.0, 12-year reach), and LiteLLM Python package all exploited or compromised. Active in-the-wild attacks detected; immediate patching required.

Vuln ExploitSupply ChainAPTTechnology

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Brotli RCE spans Node.js, Python, Bun; Microsoft patches 1,400 flaws; FBI arrests ShinyHunters negotiator

Critical vulnerabilities

Daily briefings

Brotli RCE spans Node.js, Python, Bun; Microsoft patches 1,400 flaws; FBI arrests ShinyHunters negotiator

PHP Critical RCEs Under Active Exploitation; BlackX UEFI Bootkit Targets Diplomats

Arista VeloCloud zero-day exploited; Railway, Capcom breaches; LiteLLM supply chain attack

Critical RCE exploits: PHP, GitLab, LiteLLM under active attack

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