CVE-2026-54163 secure_headers: CSP directive injection via sandbox, plugin_types, and report_to when given untrusted input

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...

Secure Headers: CSP directive injection via sandbox, plugin_types, and report_to when given untrusted input

Summary secureheaders builds the Content-Security-Policy value by stitching every configured directive together with ; separators. Three directive builders buildsandboxlistdirective, buildmediatypelistdirective, buildreporttodirective interpolate caller-supplied strings into that value without...

PT-2026-57369

Name of the Vulnerable Software and Affected Versions secure headers versions prior to 7.3.0 Description The software fails to properly sanitize caller-supplied strings when building the Content-Security-Policy CSP header. Specifically, the functions build sandbox list directive, build media type...

Content Security Policy Missing 'Report-To'

Content Security Policy CSP is a web security standard that helps to mitigate attacks like cross-site scripting XSS, clickjacking or mixed content issues. CSP provides mechanisms to websites to restrict content that browsers will be allowed to load. The 'report-to' directive allows websites to...