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Your stack: what php2shell can reach in it

Describe what you run, the way you would draw it on a whiteboard: what the internet reaches, what sits in front, the applications, the PHP under them and where it comes from, and what each can reach. The tool checks every PHP runtime against the two flaws with what this site knows (the version ranges, how PHP serves requests, the settings that reduce exposure, the edge rules, the NCSC-NL inventory) and shows the blast radius: what an attacker who runs code as your PHP worker can touch. Then it lists what on this site is about your stack.

How it decides

• The version. A runtime on a supported branch is affected below the fixed release (8.5.12, 8.4.27, 8.3.36, 8.2.35) and fixed at or above it. 8.1, 8.0 and 7.4 are affected with no upstream release, only backport branches; earlier versions have no fix at all. The CVE records carry defaultStatus 'unaffected' and list only 8.2 to 8.5, so an automated scanner reading the CVE will call 7.4 to 8.1 unaffected. The php.net advisory, the backport branches and a Greenbone reply on oss-security say otherwise.
• Where the PHP comes from. A distribution package or a vendor image keeps its own version number when it backports a fix, so a version that looks old can be fixed. When the runtime is provided by a product in the inventory, the inventory's status for that product wins over the version number, and the tool says so.
• How it serves requests. The risk is for PHP serving web requests; Apache mod_php is where remote code execution was demonstrated. CLI, cron and queue workers are outside the advisory's scope.
• Whether it can be reached. A runtime the internet reaches, through an edge or not, is exposed; one reached only from inside is not exposed from the internet, which is not the same as safe.
• What reduces it. Each setting and each edge rule is shown with its caveat. None of them turns an affected runtime into a fixed one: updating is the only reliable mitigation.
• The blast radius. Remote code execution runs as the PHP worker, so everything an affected runtime runs, and everything it or its applications can reach, is in the blast radius; what those can reach in turn is one step further.

The kinds of component:

• The internet. Anyone, anywhere. Put it in the stack and connect it to what it can reach.
• Edge: CDN, WAF or proxy. What requests pass through before they reach an application.
• Application. Something that answers requests: a CMS, a framework app, an admin panel, an API.
• Hosting, image or panel. Where the PHP comes from when you do not build it yourself: a distribution package, a container image, a control panel, a managed host.
• PHP runtime. The PHP that runs the application: its version, how it serves requests (SAPI) and its settings.
• Data store. A database, a bucket, a file share: what the application reads and writes.
• Secrets and credentials. Keys, passwords and tokens the application holds: in its config, its environment, its disk.
• Internal service. Another system the application can call: an API, a queue, a directory, a payment service.

What is checked today:

• CVE-2026-109618: php2shell: RCE via OOM corruption. Scope: web-serving PHP; at worst remote code execution as the PHP worker, before any application code runs (mod_php, demonstrated).
• CVE-2026-109619: php2shell: RCE via stale global state. Scope: web-serving PHP; at worst remote code execution as the PHP worker, across requests on the same worker (mod_php and FPM, demonstrated).

Coming: the pulse adds other vulnerabilities, in other products, as rows in the same catalogue, each with its own rule. A stack saved today is checked against them as they arrive, and the items about them are matched to it the same way.

Where your stack is kept

In this browser, under p2s.stack.v1, and in your own vault when you open it in the Ask pane (under /php-october/stack/, encrypted here before it leaves), with the rest of what you keep on this site. Export it as a file to share it with your team; import theirs. Nothing about your stack is sent to this site or anyone else. A stack describes your systems: treat the file as you would an architecture diagram.

This is a first version, a thinking tool and not a scanner: it knows only what you tell it and what this site has captured. Check every finding against your own systems and your vendor's advisory.