CVE-2026-54163: Improper Neutralization of Input During Web Page Generation

secureheaders manages application of security headers with many safe defaults. Prior to 7.3.0, secureheaders builds the Content-Security-Policy value by stitching directives with ; separators, and buildsandboxlistdirective, buildmediatypelistdirective, and buildreporttodirective interpolate...

RubyGem secure_headers injection vulnerability

RubyGems is a Ruby package manager from the RubyGems organization. The product is primarily used for distributing and managing Ruby packages. An injection vulnerability exists in RubyGem secureheaders versions prior to 3.9.0, prior to 5.2.0, and prior to 6.3.0. The vulnerability stems from a lack...

CVE-2020-5217

A flaw was found in rubygem-secureheaders in versions prior to 6.2.0, 5.1.0, and 3.8.0. If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a semicolon could be injected leading to directive injection which could be used to override a script-src directive. The...

CRLF Injection

secureheaders is vulnerable to CRLF injection. A newline character can be used to write arbitrary value into the Content-Security-Policy header via append/overridecontentsecuritypolicydirectives...

Code injection

In Secure Headers RubyGem secureheaders, a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a semicolon could be injected leading to directive injection. This could be us...

CVE-2020-5216 Limited header injection when using dynamic overrides with user input in RubyGems secure_headers

In Secure Headers RubyGem secureheaders, a directive injection vulnerability is present in versions before 3.9.0, 5.2.0, and 6.3.0. If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a newline could be injected leading to limited header injection. Upon seeing a...

GHSA-W978-RMPF-QMWG Limited header injection when using dynamic overrides with user input in RubyGems secure_headers

Impact If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a newline could be injected leading to limited header injection. Upon seeing a newline in the header, rails will silently create a new Content-Security-Policy header with the remaining value of the...

CVE-2020-5217 Directive injection when using dynamic overrides with user input in RubyGems secure_headers

In Secure Headers RubyGem secureheaders, a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a semicolon could be injected leading to directive injection. This could be us...

CVE-2020-5217: Improper Neutralization of Directives in Dynamically Evaluated Code

In Secure Headers RubyGem secureheaders, a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a semicolon could be injected leading to directive injection. This could be us...

secure_headers directive injection using semicolon

If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a semicolon could be injected leading to directive injection. This could be used to e.g. override a script-src directive. Duplicate directives are ignored and the first one wins. The directives in secureheaders...

secure_headers header injection due to newline

If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a newline could be injected leading to limited header injection. Upon seeing a newline in the header, rails will silently create a new Content-Security-Policy header with the remaining value of the original...