Product

Cloudflare Workers

4 mentions in 7 days · 9 in 30 days · 11 total · first seen Aug 11, 2026 · last 4d ago

Timeline11 articles

Show HN: ResolveHQ – A Helpdesk Built on Cloudflare Workers, D1, R2 and Queues

A developer launched ResolveHQ, an open helpdesk application built entirely on Cloudflare's Workers, D1, R2, and Queues infrastructure.

A Hacker News Show HN post presents ResolveHQ, a helpdesk application running serverlessly on Cloudflare Workers with D1 as the database, R2 for storage, and Queues for async work. The post earned 40 points and 14 comments. It has no direct cybersecurity or AI relevance for defenders.

Hacker News · AISep 11, 21:48 UTC · 4d agoOther 2 sources HN 40↑ · 14 comments

ClearFake Deploys Crypto Stealer That Uses Vulnerable Driver to Kill EDR Security Tools

Cisco Talos details ClearFake's fake-CAPTCHA chain deploying ZigCryptoStealer with a BYOVD attack that kills EDR processes, observed at a Ukrainian government organization in April 2026.

ClearFake compromises websites, injects JavaScript via a malicious Cloudflare Worker, retrieves instructions from BNB Smart Chain contracts (EtherHiding), and presents a fake Google CAPTCHA that tricks Windows users into pasting a command that loads a remote library over WebDAV via rundll32. The crypto-stealer branch uses DLL side-loading with a signed Chrome component to launch ZigCryptoStealer, which hijacks clipboard cryptocurrency addresses, alongside a signed but vulnerable Windows driver used in a BYOVD attack to terminate EDR processes. A parallel branch delivers Amatera secondary payloads that install a hidden remote-access client providing operator desktop control, with Cisco Talos tracking the remote-loader activity as UAT-10820. Talos observed unusual remote library execution at a Ukrainian government organization in April 2026 and assesses the attacks are part of a broader theft operation rather than a single targeted campaign.

Cyber Security Newsupdated Sep 11, 16:36 UTC · 4d agofirst Sep 9, 14:26 UTC · 6d agoMalware in the wild 4 sources1

Hackers Abuse Google CAPTCHA, WebDAV and BNB Smart Chain to Deploy Credential-Stealing Malware

Cisco Talos details ClickFix campaigns abusing fake Google CAPTCHA prompts, WebDAV and BNB Smart Chain to deploy the Amatera infostealer.

Cisco Talos identified a multi-stage campaign, first observed in April 2026 when a Ukrainian government organization executed a disguised DLL named verification.google from a WebDAV path. The chain combines ClearFake JavaScript injected via malicious Cloudflare Workers, EtherHiding payloads stored in BNB Smart Chain contracts, ClickFix social engineering, and WebDAV-hosted DLL loaders to deliver the Amatera (ACR Stealer) infostealer. The Amatera configuration contained over 400 collection entries targeting browsers, messengers, crypto wallets, password managers, FTP and VPN tools, hunting for .kdbx, .p12, .pfx and .pem files. The pf.ch branch deploys ZigCryptoStealer, an EDR-terminating vulnerable driver and Go-based reverse TCP proxies, while the verification.google branch installs NetSupport Manager, supporting moderate-confidence attribution of the UAT-10820 activity to a Russian actor.

GBHackersupdated Sep 11, 16:36 UTC · 4d agofirst Sep 9, 13:27 UTC · 6d agoMalware in the wild 4 sources

How we rebuilt Cloudflare Workers’ module registry for Node.js compatibility

Cloudflare rewrote the Workers (workerd) module registry for Node.js-compatible URL-based module resolution, shipped behind the new_module_registry flag with a 64 MiB bundle limit.

Cloudflare rebuilt the module registry in workerd, the open-source Workers runtime, so module specifiers are resolved as URLs and ESM, CommonJS, and WebAssembly modules follow Node.js semantics. The change is enabled with the new_module_registry compatibility flag and adds import.meta.resolve(), require(esm), import attributes validation, lazy compilation, and cross-isolate cache sharing. It also lifts the compressed bundle size limit to 64 MiB on all plans; the legacy registry implementation remains available.

Cloudflare Blogupdated Sep 11, 21:48 UTC · 4d agofirst Sep 9, 13:00 UTC · 6d agoOther 2 sources

Introducing context-aware vulnerability discovery and remediation with Cloudflare Managed Defense and OpenAI Daybreak models

Cloudflare launches invitation-only Vulnerability Discovery and Remediation within Managed Defense, using OpenAI Daybreak models and WAF context to prioritize and patch vulnerabilities.

Cloudflare announced early access to Vulnerability Discovery and Remediation, an invitation-only service within Cloudflare Managed Defense. The service uses OpenAI Daybreak models, including GPT-5.6 Cyber, via the Daybreak Defense Network to hunt and validate vulnerabilities in customer-authorized codebases across Workers and proxied applications. Findings are prioritized using production traffic, WAF rule, and security event context, and proposed patches and WAF mitigations are automatically checked before customer review.

Cloudflare BlogSep 3, 21:03 UTC · 12d agoTools

⚡ Weekly Recap: AI-Powered PLC Attacks, GitLab Attacks, Stripe Key Leaks and More

US agencies warn of AI-assisted attacks on exposed Siemens PLCs; the week also saw GitLab CVE-2026-19478 exploited and trojanized npm packages found.

The weekly recap leads with a US government warning that threat actors use AI-generated scripts and Censys/ZoomEye scanning to attack internet-exposed Siemens S7 PLCs in water, energy and manufacturing, calling it an active threat. Other stories include active exploitation of GitLab CVE-2026-19478 (CVSS 9.4, unauthenticated project rewriting), 14 trojanized npm packages delivering the RedC2 4.0 Linux backdoor, and the Zombie Card attack that revives expired Visa cards for contactless payment fraud. It also covers suspected Russian clusters UNC6293, UNC7005 and UNC5976 phishing campaigns, a faster Cloudflare Workers Spectre JWT leak, and a bespoke Cl0p JSP web shell deployed after exploiting PTC Windchill flaws.

The Hacker NewsAug 28, 08:05 UTC · 18d agoThreat actor in the wildCVE-2026-194781

40 Malicious Firefox Extensions Pose as Web3 Products to Steal Wallet Secrets

Socket found 40 malicious Firefox extensions impersonating OKX, Rabby Wallet, and TronLink to steal cryptocurrency wallet recovery phrases and private keys.

The Socket Threat Research team identified 40 malicious Firefox extensions masquerading as Web3 products including OKX, Rabby Wallet, and TronLink, part of a broader set of 77 add-ons sharing source code and infrastructure overlaps. The campaign, dubbed Offside Wallet Theft Factory, has been active since March 2026 and remains unattributed. Of the 40 confirmed malicious extensions, 15 capture recovery phrases and private keys exfiltrated through Cloudflare Workers, 13 modified Rabby Wallet builds exfiltrate serialized keyrings before local encryption, seven use attacker-controlled Supabase projects as remote switches, and five capture credentials and clipboard data via hard-coded C2. Some extensions began as sports score or utility shells before being repurposed into wallet stealers under the same Firefox ID.

The Hacker NewsAug 20, 08:42 UTC · 26d agoMalware in the wild

Cloudflare Workers Spectre Attack Leaks JWT From Co

Researchers demonstrated a remote Spectre attack leaking a JWT between co-located Cloudflare Workers at 12 bits per second, 360x the 2021 rate.

Security researchers showed a remote Spectre attack against Cloudflare Workers that leaked a JWT from a co-located Worker at up to 12 bits per second with 99.16% accuracy, 360 times the 2021 demonstration rate. The attack exploited weaknesses in DyPrIs dynamic process isolation, where long-lived Durable Object invocations could run before isolation and WebSocket-heavy I/O suppressed the branch-misprediction signal. Cloudflare deployed improved DyPrIs, the V8 Sandbox, and MPK-based in-process isolation, and found no indicators of active exploitation over three years.

The Hacker NewsAug 19, 19:02 UTC · 27d agoVulnerability

A revisit of remote Spectre attacks on Cloudflare Workers

Cloudflare details its 2024-2025 reassessment of remote Spectre attacks on Workers, covering new attack primitives and hardened defenses.

Cloudflare reassessed the feasibility of remote Spectre attacks against its Workers serverless infrastructure across 2024 and 2025. The write-up describes new attack primitives including Spectre gadgets, remote timers, and techniques for achieving co-location with victim workloads. It also explains new defenses that further harden Cloudflare Workers against speculative-execution side channels.

Cloudflare BlogAug 19, 16:00 UTC · 27d agoResearch

Secure all your internal vibe-coded applications — in one click

Cloudflare launched Access for Workers, letting admins attach one zero-trust policy to a Worker across all routes, domains, and previews automatically.

Cloudflare announced Access for Workers, a feature that binds an Access (zero-trust) policy directly to a Worker rather than to individual routes. The policy then applies automatically everywhere the Worker runs, including custom domains, workers.dev subdomains, routes, and preview URLs. Cloudflare positions it as one-click protection for internal, quickly built (vibe-coded) applications.

Cloudflare BlogAug 14, 13:00 UTC · Aug 14, 2026Tools1

Nearly 800 Malicious npm Packages Deliver Cross

Nearly 800 typo-squatted npm packages deliver WEL1DROPPER, a cross-platform downloader installing RAT and infostealer payloads on Windows, macOS, Linux.

Researchers found roughly 800 npm packages with AI-generated typo-squat names that trigger a WEL1DROPPER downloader when loaded via require() rather than install hooks. The downloader fetches payloads from Cloudflare Workers hosts, falling back to DNS TXT records from wel1.ru, then achieves persistence, sandbox checks, ETW/AMSI patching and Sliver C2 deployment on Linux. Domains like tcsbank.ru suggest targeting of Russian financial institutions; Sonatype tracks the campaign as Flooding Dropper, a possible evolution of the Moika dependency-confusion campaign. Unit 42 separately documented npm/PyPI crypto stealers and malicious Chrome extensions that turn browsers into residential proxy crawlers.

The Hacker NewsAug 11, 14:37 UTC · Aug 11, 2026Malware in the wild

Related CVEsby mentions

CVE-2026-194789.16%
Unauthenticated GraphQL Code Injection in GitLab CE/EE Enables Data Tampering
GitLab has patched a critical (CVSS 9.1) code injection flaw (CWE-94) in how GitLab Community Edition (CE) and Enterprise Edition (EE) process GraphQL directives. Under certain conditions, an unauthenticated remote attacker can abuse a GraphQL directive to modify or delete public projects and user data on affected instances, requiring no privileges or user interaction; the impact is to integrity and availability, not confidentiality. Affected versions span all GitLab CE/EE releases from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4, which covers self-managed installations as well as the same codebase that powers the GitLab.com SaaS. News reports indicate the flaw came under active exploitation within days of disclosure, and EPSS assigns a 5.8% probability of exploitation within 30 days (93rd percentile). It is not yet listed in CISA's KEV catalog and no public proof-of-concept is known, but defenders should treat it as an actively exploited, unauthenticated, high-impact issue.
· GitLab CE all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 · GitLab EE all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4mass

Appears with

vendor Cloudflare 7 vendor Cisco Talos 2 organization Cloudflare 2 victim Ukrainian government organization 2 malware ZigCryptoStealer 2 malware Amatera 2 threat actor UAT-10820 2 malware ClearFake 1 ai model Daybreak 1 threat actor UNC5976 1 malware WEL1DROPPER 1 ai model GPT-5.6 Cyber 1 organization BNB Smart Chain 1 organization Censys 1 threat actor UNC7005 1 malware Sliver 1

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