WordPress: Mehrere Schwachstellen
WID-SEC-2026-2701 · first 07.08.2026 · updated 22.09.2026 · CVSS 8,3
What it is about
WordPress ist ein PHP basiertes Open Source Blog-System. Ein Angreifer kann mehrere Schwachstellen in WordPress ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, um seine Privilegien zu erhöhen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Cross-Site Scripting Angriff durchzuführen
- seine Privilegien zu erhöhen
- Informationen offenzulegen
- Sicherheitsvorkehrungen zu umgehen
Am I affected?
Affected according to the BSI:
- Debian Linux
- Fedora Linux
- Open Source WordPress <7.0.3
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source WordPress 7.0.3
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- WordPress 7.0.3 release notes vom 2026-08-06 wordpress.org
- GitHub Security Advisory GHSA-52p2-r8wf-jcrf vom 2026-08-06 github.com
- Debian Security Advisory DSA-6427 vom 2026-08-10 security-tracker.debian.org
- Fedora Security Advisory FEDORA-2026-61704C09EA vom 2026-08-13 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-EPEL-2026-96FEEBE88A vom 2026-08-13 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-EPEL-2026-4F38E2A6EB vom 2026-08-13 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-EPEL-2026-C91A425A57 vom 2026-08-13 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-DC0FF85B8B vom 2026-08-13 bodhi.fedoraproject.org
- XSS2Shell: WordPress Preauth XSS to RCE Chain vom 2026-09-21 github.com
CVE: CVE-2026-64638
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.