Joomla: Mehrere Schwachstellen
WID-SEC-2026-2238 · first 08.07.2026 · updated 08.07.2026 · CVSS 9,1
What it is about
Joomla ist ein freies Content-Management-System, basierend auf der Scriptsprache PHP und einer SQL-Datenbank. Über zahlreiche Extensions kann der Funktionsumfang der Core-Installation individuell erweitert werden. Ein entfernter Angreifer kann mehrere Schwachstellen in Joomla ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen und um Sicherheitsmechanismen zu umgehen.
Under what conditions?
Over the network.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Cross-Site Scripting Angriff durchzuführen
- Sicherheitsmechanismen zu umgehen
Am I affected?
Affected according to the BSI:
- Open Source Joomla <5.4.7
- Open Source Joomla <6.1.2
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Joomla 5.4.7
- Open Source Joomla 6.1.2
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)
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
- Joomla Security Announcements vom 2026-07-07 developer.joomla.org
CVE: CVE-2026-48949, CVE-2026-48950, CVE-2026-48951, CVE-2026-48952, CVE-2026-48953, CVE-2026-48954, CVE-2026-48947, CVE-2026-48948, CVE-2026-48955, CVE-2026-48956, CVE-2026-48957, CVE-2026-48958
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.