CVE-2012-2751 Security feature bypass in n/a

What is CVE-2012-2751?

CVE-2012-2751 is a medium-severity vulnerability in Debian Debian Linux, published on 22 Jul 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ModSecurity before 2.6.6, when used with PHP, does not properly handle single quotes not at the beginning of a request parameter value in the Content-Disposition field of a request with a multipart/form-data Content-Type header, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-5031.

Which versions are affected by CVE-2012-2751?

It affects 4 products.

Products include Debian Debian Linux, Opensuse Opensuse, Oracle Http Server, Trustwave Modsecurity.

How do I fix CVE-2012-2751?

Upgrade to a fixed version.

Is CVE-2012-2751 being exploited?

There is no known exploitation of CVE-2012-2751 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2012-2751, DSA-2506-1, GHSA-38m7-p7j8-c694.