| Name | CVE-2026-54163 |
| Description | secure_headers manages application of security headers with many safe defaults. Prior to 7.3.0, secure_headers builds the Content-Security-Policy value by stitching directives with ; separators, and build_sandbox_list_directive, build_media_type_list_directive, and build_report_to_directive interpolate caller-supplied strings without scrubbing ;, \r, or \n. When untrusted input reaches SecureHeaders.override_content_security_policy_directives or append APIs for :sandbox, :plugin_types, or :report_to, an attacker can inject a CSP directive such as script-src 'unsafe-inline' * before the legitimate script-src, enabling XSS reachability through these sinks or CSP report exfiltration. This issue is fixed in version 7.3.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ruby-secure-headers (PTS) | bookworm, bullseye | 6.3.2-1 | vulnerable |
| trixie | 6.3.2-2 | vulnerable | |
| forky, sid | 7.3.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ruby-secure-headers | source | (unstable) | 7.3.0-1 |
https://github.com/github/secure_headers/security/advisories/GHSA-rqq5-2gf9-4w4q
Fixed by: https://github.com/github/secure_headers/commit/286a79dea80c6a9be4ca93e0f284c923cf77e539 (7.3.0)