CVE-2018-25047 Smarty Cross-site Scripting vulnerability in pages that use smarty_function_mailto

What is CVE-2018-25047?

CVE-2018-25047 is a medium-severity cross-site scripting vulnerability in Debian Debian Linux, published on 14 Sep 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

In Smarty before 3.1.47 and 4.x before 4.2.1, libs/plugins/function.mailto.php allows XSS. A web page that uses smarty_function_mailto, and that could be parameterized using GET or POST input parameters, could allow injection of JavaScript code by a user.

Weakness: CWE-79

Which versions are affected by CVE-2018-25047?

4 open source packages ship an affected version, including smarty/smarty. It affects 2 products.

Products include Debian Debian Linux, Smarty Smarty.

How do I fix CVE-2018-25047?

Upgrade smarty/smarty to a fixed version for your release line: 3.1.47 or 4.2.1.

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-2018-25047 being exploited?

There is no known exploitation of CVE-2018-25047 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-2018-25047, DLA-3262-1, GHSA-hwq7-5vv9-c6cf, MGASA-2023-0014, UBUNTU-CVE-2018-25047.