[NEW] [high] Contao: Multiple Vulnerabilities
An attacker can exploit multiple vulnerabilities in Contao to bypass security measures, escalate privileges and potentially gain administrator rights, perform cross-site scripting attacks, disclose sensitive information, and manipulate data.
CSIRTS triage
- What
- Multiple vulnerabilities in Contao allow attackers to bypass security measures, escalate privileges to administrator, execute cross-site scripting, disclose sensitive information, and manipulate data.
- Who is affected
- All Contao CMS deployments are affected; privilege escalation to administrator is possible.
- Urgency
- High; privilege escalation to administrator combined with XSS and data manipulation requires urgent patching.
- Action
- Apply Contao security patches immediately to all instances.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2999
Recent advisories for Contao
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- lowGHSA-grm4-wm43-9jh5: Contao: Possible path traversal in job download URIsghsa · 2026-08-06
- lowGHSA-3mr9-p497-58f6: Contao crawler leaks auth credentials to external hostsghsa · 2026-08-06
- low[NEW] [low] Contao: Vulnerability allows information disclosurecert-bund · 2026-08-03
- low[UPDATE] [low] Contao: Multiple vulnerabilities enable disclosure of informationcert-bund · 2026-08-03
- lowCVE-2026-55825: Contao is an Open Source CMS. In versions 5.7.0 through 5.7.6, an authenticated backend user w…nvd · 2026-07-31
- lowCVE-2026-57232: Contao is an Open Source CMS. From 5.3.35 through 5.3.47 and from 5.7.0-RC1 through 5.7.8, the…nvd · 2026-07-31
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