PHP: Mehrere Schwachstellen ermöglichen Codeausführung
WID-SEC-2026-4055 · first 21.10.2026 · updated 27.10.2026 · CVSS 9,8
What it is about
PHP ist eine Programmiersprache, die zur Implementierung von Web-Applikationen genutzt wird. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in PHP ausnutzen, um Speicherinhalte offenzulegen, einen Denial-of-Service-Zustand auszulösen oder beliebigen Code auszuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- Speicherinhalte offenzulegen
- einen Denial-of-Service-Zustand auszulösen oder beliebigen Code auszuführen
Am I affected?
Affected according to the BSI:
- Debian Linux
- Google Cloud Platform
- Amazon Linux 2
- Red Hat Enterprise Linux
- Fedora Linux
- Open Source PHP
- IBM QRadar SIEM
- Open Source Arch Linux
- Gentoo Linux
- F5 BIG-IP
- cPanel cPanel/WHM
- RESF Rocky Linux
and 19 more
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Checkmk Checkmk 2.4.0p38
- Checkmk Checkmk 2.3.0p51
- Checkmk Checkmk 2.5.0p17
- Open Source Matomo 5.14.2
- Open Source PHP 8.2.35
- Open Source PHP 8.3.36
- Open Source PHP 8.4.27
- Open Source PHP 8.5.12
- cPanel cPanel/WHM 11.110.0.153
- cPanel cPanel/WHM 11.134.0.66
- cPanel cPanel/WHM 11.136.0.50
- cPanel cPanel/WHM 11.138.0.18
Is the vulnerability already being exploited?
- CVE-2026-109618: exploited in the wild according to CISA, in the catalogue since 26.10.2026.
- CVE-2026-109619: exploited in the wild according to CISA, in the catalogue since 26.10.2026.
Information and sources
- Original BSI advisory (WID)
- PHP 20 Oct 2026 Upcoming Critical PHP Security Release vom 2026-10-20 www.php.net
- CERT EU vom 2026-10-20 cert.europa.eu
- Arch Linux Security Advisory ASA-202610-1 vom 2026-10-21 security.archlinux.org
- CheckMK Werk 19262 vom 2026-10-21 checkmk.com
- Google Cloud Platform Security Bulletin GCP-2026-070 vom 2026-10-21 docs.cloud.google.com
- cPanel & WHM Documentation vom 2026-10-21 docs.cpanel.net
- cPanel & WHM Documentation vom 2026-10-21 docs.cpanel.net
- cPanel & WHM Documentation vom 2026-10-21 docs.cpanel.net
- cPanel & WHM Documentation vom 2026-10-21 docs.cpanel.net
- Rocky Linux Security Advisory RLSA-2026:87070 vom 2026-10-22 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:87071 vom 2026-10-22 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:87072 vom 2026-10-22 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:87079 vom 2026-10-22 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:87151 vom 2026-10-22 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-87070 vom 2026-10-22 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-87071 vom 2026-10-22 linux.oracle.com
- SUSE Security Update SUSE-SU-2026:4844-1 vom 2026-10-21 lists.suse.com
- SUSE Security Update SUSE-SU-2026:4843-1 vom 2026-10-21 lists.suse.com
- Oracle Linux Security Advisory ELSA-2026-87151 vom 2026-10-22 linux.oracle.com
- Debian Security Advisory DLA-4848 vom 2026-10-21 lists.debian.org
- Matomo Changelog vom 2026-10-22 matomo.org
- F5 Security Advisory K000163821 vom 2026-10-21 my.f5.com
- Ubuntu Security Notice USN-8948-1 vom 2026-10-21 ubuntu.com
- Ubuntu Security Notice USN-8948-2 vom 2026-10-21 ubuntu.com
- Debian Security Advisory DSA-6574 vom 2026-10-21 security-tracker.debian.org
and 39 more sources in the original advisory
CVE: CVE-2026-109618, CVE-2026-109619
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.