Improper Neutralization of Special Elements in Output Used by a Downstream Component in Contao - CVE-2020-25768
Published: September 24, 2020 / Updated: May 5, 2026
Vulnerability identifier: #VU130133
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-25768
CWE-ID: CWE-74
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Contao
Affected software:
Contao
Contao
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper input neutralization in front end forms when processing user-supplied form input. A remote attacker can inject insert tags to disclose sensitive information.
The issue is triggered when injected insert tags are replaced during page rendering.
How to mitigate CVE-2020-25768
Install security update from vendor's website.