--- title: "Cloudflare Launches Zero Wire, a Public Feed of Critical Web Flaws" description: "Cloudflare Zero Wire is a public feed on Radar that explains critical web vulnerabilities, who should check them and what to do, for customers or not." url: https://publishmyblog.com/website-tools/cloudflare-zero-wire/ section: "Website Tools" author: "Saeed Shahriar" published: 2026-11-04T10:29:00.000Z updated: 2026-11-04T14:51:00.000Z --- # Cloudflare Launches Zero Wire, a Public Feed of Critical Web Flaws Each briefing says who should investigate, what to do now and what a WAF rule can and can't cover. You don't need to be a Cloudflare customer to read it. Cloudflare has launched Zero Wire, **a public feed on Cloudflare Radar that explains critical web flaws** in plain language, with who should check them and what to do next. You don't need to be a customer to read it. ## What Zero Wire is [Cloudflare's Zero Wire announcement](https://blog.cloudflare.com/zero-wire/), published on November 3, pitches it as **a news wire for critical security developments**. It sits in Radar's security section. It doesn't try to list every CVE. **It picks critical flaws in Internet-facing software**: web apps, the runtimes and libraries under them, and exposed services. Each briefing covers: - A plain-language overview: what happened and which teams should investigate. - "What to do now", a short list of next steps. - Links to evidence, such as CVE records and CISA's Known Exploited Vulnerabilities Catalog. - An update chronology, plus a last-checked date. - A Cloudflare section on any WAF rule that helps. The homepage splits briefings into "Needs attention" and "Reference". So what does "Reference" mean? **The guidance has settled**, though plenty of sites may still be unpatched. You can search by CVE or issue name, and follow technology tags. ## The php2shell example Cloudflare walks through its briefing on php2shell, the PHP runtime flaws we covered in [PHP2Shell: two critical PHP flaws](https://publishmyblog.com/website-tools/php2shell-critical-php-flaws/). Its point is simple. **Updating WordPress or a plugin doesn't fix the PHP runtime** underneath it. Then the briefing tells you to ask three things: which PHP runtime is really running, whether the vendor's fix has been applied, and who owns the update on your side, you or your host. There's also a ready-made prompt for your AI agent. **It asks for a read-only check** of your software, fixes and exposure. ## What a WAF rule can't do Cloudflare is careful here, and you should be too. - A WAF rule is a compensating control, and you still need to fix the vulnerable software. - Blocking requests can't undo what already happened on your server. - Attack attempts seen on Cloudflare's network don't prove anyone was compromised. - No attempts seen doesn't prove nobody is exploiting it elsewhere. The dashboard links in a briefing don't switch a rule on for you, either. ## Why it matters My guess is that most small site owners never read a vendor advisory at all, and only hear about a critical flaw when their host sends an email or their own site starts acting strange. So a public, plain-English page that says who should check what is useful, and **I'd bookmark the Zero Wire homepage**. That said, it's Cloudflare writing about flaws its own WAF can help block. **I'd read the vendor's fix first** and the Cloudflare section last. Running WordPress or Magento on shared hosting? Then the php2shell lesson is the one to keep. **Ask your host which PHP version you're on**, and don't assume a plugin update covered it. Still want a wider routine? Our [WordPress security checklist](https://publishmyblog.com/guides/wordpress-security-checklist/) covers the rest. ## Common Questions **Do I need to be a Cloudflare customer to use Zero Wire?** No. Cloudflare says the Zero Wire briefings on Cloudflare Radar are useful whether or not you're a customer, and only the Cloudflare section in each briefing is about its own WAF and dashboard settings. **Does a Cloudflare WAF rule fix a critical vulnerability?** No. Cloudflare calls a WAF rule a compensating control, so you still need to fix the vulnerable software, and blocking requests can't undo what already happened on your server. Apply the vendor's fix too. **Does updating WordPress fix the php2shell flaws?** No. The php2shell flaws are in the PHP runtime, so updating WordPress or a plugin doesn't fix the PHP runtime underneath it. Ask your host which PHP version is running and whether the vendor's fix is applied. ## Sources - [Introducing Zero Wire, a hub for investigating critical Internet vulnerabilities](https://blog.cloudflare.com/zero-wire/), Cloudflare