CVE-2012-6684 RedCloth Cross-site Scripting vulnerability

What is CVE-2012-6684?

CVE-2012-6684 is a medium-severity cross-site scripting vulnerability in Debian Debian Linux, published on 8 Jan 2015. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in the RedCloth library 4.2.9 for Ruby and earlier allows remote attackers to inject arbitrary web script or HTML via a javascript: URI.

Weakness: CWE-79

Which versions are affected by CVE-2012-6684?

2 open source packages ship an affected version, including RedCloth. It affects 2 products.

Products include Debian Debian Linux, Redcloth Redcloth Library.

How do I fix CVE-2012-6684?

Upgrade RedCloth to 4.3.0 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2012-6684 being exploited?

There is no known exploitation of CVE-2012-6684 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-2012-6684, DLA-167-1, DSA-3168-1, GHSA-r23g-3qw4-gfh2, openSUSE-SU-2024:10401-1.