CVE-2026-57403

HIGH 7.1

WordPress GD Security Headers plugin <= 1.8 - Cross Site Scripting (XSS) vulnerability

CVSS Score

7.1

EPSS Score

0.3%

EPSS Percentile

16th

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Milan Petrovic GD Security Headers gd-security-headers allows Reflected XSS.This issue affects GD Security Headers: from n/a through <= 1.8.

CWE	CWE-79
Vendor	milan petrovic
Product	gd security headers
Published	Jul 13, 2026
Last Updated	Jul 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

Milan Petrovic / GD Security Headers

0 ≤ 1.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/Wordpress/Plugin/gd-security-headers/vulnerability/wordpress-gd-security-headers-plugin-1-8-cross-site-scripting-xss-vulnerability?_s_id=cve

Credits

HaiND | Patchstack Bug Bounty Program