{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54163", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-11T21:46:52.380Z", "datePublished": "2026-07-17T20:19:18.186Z", "dateUpdated": "2026-07-17T20:19:18.186Z"}, "containers": {"cna": {"title": "secure_headers: CSP directive injection via sandbox, plugin_types, and report_to when given untrusted input", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-113", "lang": "en", "description": "CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/github/secure_headers/security/advisories/GHSA-rqq5-2gf9-4w4q", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/github/secure_headers/security/advisories/GHSA-rqq5-2gf9-4w4q"}, {"name": "https://github.com/github/secure_headers/commit/286a79dea80c6a9be4ca93e0f284c923cf77e539", "tags": ["x_refsource_MISC"], "url": "https://github.com/github/secure_headers/commit/286a79dea80c6a9be4ca93e0f284c923cf77e539"}, {"name": "https://github.com/github/secure_headers/releases/tag/v7.3.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/github/secure_headers/releases/tag/v7.3.0"}], "affected": [{"vendor": "github", "product": "secure_headers", "versions": [{"version": "< 7.3.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-17T20:19:18.186Z"}, "descriptions": [{"lang": "en", "value": "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": {"advisory": "GHSA-rqq5-2gf9-4w4q", "discovery": "UNKNOWN"}}}}

{}

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{}