What’s Vulnerable › Vulnerabilities

CVE-2011-0508

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-01-20 · updated 2026-06-16
• Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2.9.2, and possibly other versions before 2.9.3, allows remote attackers to inject arbitrary web script or HTML via the HTTP X_FORWARDED_FOR header, which is stored by system/libraries/Environment.php but not properly handled by a comments action to main.php.

Affected products

• Contao Cms: 2.9.2

References

• http://dev.contao.org/issues/2751
• http://secunia.com/advisories/42899
• http://www.contao.org/changelog.html
• http://www.contao.org/news/items/contao-2_9_3.html
• http://www.osvdb.org/70440
• http://www.securityfocus.com/archive/1/515691/100/0/threaded
• https://exchange.xforce.ibmcloud.com/vulnerabilities/64679
• http://dev.contao.org/issues/2751
• http://secunia.com/advisories/42899
• http://www.contao.org/changelog.html
• http://www.contao.org/news/items/contao-2_9_3.html
• http://www.osvdb.org/70440

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