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CVE-2026-54163: secure_headers < 7.3.0
CVE-2026-54163. CVSS 3.1 base score 4.7 (MEDIUM, Vendor/CNA). EPSS 0.00286 (percentile 0.2008), scored 24-Oct-2026.
Affected technology
secure_headers · < 7.3.0
github
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · User interaction required
What an attacker can do
The source says 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. Vendor/CNA’s CVSS 3.1 assessment (base score 4.7/10) rates confidentiality and integrity impact as low; availability impact as none.
- CWE
- CWE-79, CWE-113
- CCR priority
- 18.9 /100 (P5)
- CVSS 3.1
- 4.7 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N · Vendor/CNA
- EPSS
- 0.00286 · percentile 0.2008 · 2026-10-24
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-25 01:28:19.133527+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-54163.html