PHP Patch
CVE-2026-109618 · CVE-2026-109619CVSS 9.2 CriticalRemote code execution without loginPHP 5.4 – 8.5.11
PHP vulnerability response for Nextcloud

Your private cloud is public-facing PHP.

Nextcloud is built on PHP and is usually reachable from anywhere so staff can sync files. The new flaws can let attackers in without logging in, which puts every stored file at risk.

Affected versions

Is the PHP Nextcloud runs on affected?

5.4 – 8.1No fix comingEnd of life. Upgrade to 8.2+
8.2Fixed in8.2.35
8.3Fixed in8.3.36
8.4Fixed in8.4.27
8.5Fixed in8.5.12

Run php -v on the server. A patched version on disk only protects you after every PHP worker restarts. Distro packages can carry backported fixes under older version numbers, so we confirm against your vendor's changelog.

Why Nextcloud is exposed

What makes these sites a target.

  • Exposed to the internet by design

    Sync clients and web access need the server reachable from outside, which also makes it reachable by attackers.

  • Generic WAF rules break sync

    Nextcloud relies on large and chunked uploads. Blunt request blocking stops clients from syncing, so the rules have to fit Nextcloud.

  • Many install methods

    Docker AIO, snap, distro packages and manual installs each update PHP differently.

  • Everything is in one place

    A compromised server exposes documents, calendars, contacts and credentials for connected storage.

What we do

How we fix it on Nextcloud.

The first commands we run, read-only:

sudo -u www-data php occ status
php -v
docker ps --format '{{.Names}}: {{.Image}}' | grep -i nextcloud
  • Inventory

    We identify how Nextcloud is installed and which PHP version the web and cron processes use.

  • Upgrade

    We update containers, snap or packages to a patched PHP release that your Nextcloud version supports.

  • Restart and verify

    We restart PHP-FPM or the containers and check the admin overview and occ for errors.

  • Harden

    We add edge rules that keep client sync and the web interface working, and lock down php.ini.

Wherever it runs

Any cloud, any VPS, any server.

The fix is the same everywhere: a patched PHP build, restarted workers and hardened settings. We work on VMs, containers, Kubernetes, serverless runtimes and control-panel hosting.

AWSMicrosoft AzureGoogle CloudOracle CloudDigitalOceanAkamai / LinodeVultrHetznerOVHcloudIONOSShared hostingOn-premises & colo
Services

Pick how much you want us to do.

Start here

Exposure check

  • Every PHP version and server you run, listed
  • Clear verdict: exposed or not, and how urgent
  • Written report with next steps

Fixed fee, credited toward remediation

Consulting

Guided remediation

  • Upgrade plan for your platform and hosting
  • Temporary hardening while you wait
  • Edge and WAF rules written for your routes
  • We review your team's work and verify it

Hourly or fixed package

Ongoing

Patch watch

  • We track PHP and platform advisories
  • Quarterly version and config checks
  • Priority response for the next critical CVE

Monthly retainer

How an engagement works

From first call to verified fix.

  1. Authorize

    You sign a short scope and authorization. We don't scan or touch any system without it.

  2. Inventory

    We record every PHP version, server, container and worker process in scope.

  3. Plan

    You get a fixed quote, a schedule and a rollback plan before any change.

  4. Patch and restart

    We upgrade PHP and restart every worker so no vulnerable code stays in memory.

  5. Verify

    We confirm the fix on every host and hand over a written report.

Signs of an attack?

Don't restart the server yet.

If you see shells or tools like curl launched by PHP processes, PHPSESSID cookies longer than 256 bytes, or a spike in PHP worker crashes, contact us before you patch. Restarting wipes the memory evidence that shows what an attacker did. We preserve that evidence first, then work with an incident response firm if the investigation needs one.

Questions

Nextcloud questions.

We use Nextcloud All-in-One.

AIO bundles its own PHP in containers. We update to a release built on patched PHP and confirm the running containers.

Will sync stop during the upgrade?

Only for a short window. Clients resume automatically when the server comes back.

Can we keep it off the internet?

Putting it behind a VPN or zero-trust access is a strong extra layer, and we can set that up.

Book an exposure check

Find out where you stand this week.

Tell us what you run on Nextcloud and where it's hosted. We'll reply within one business day with a time for the exposure check.

Email us

Include your platform, approximate number of sites or servers, and your hosting provider.