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GD Security Headers <= 1.8 - Unauthenticated Stored Cross-Site Scripting

CVE-2026-57403 · gd-security-headers

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Gd Security Headers at a vulnerable version. How SiteRespond intelligence works

Vulnerability
GD Security Headers <= 1.8 - Unauthenticated Stored Cross-Site Scripting
Affected software
gd-security-headers(Plugin)
Affected versions
  • ≤ 1.8
Authentication
Unauthenticated
Vulnerability type
Cross-site scripting
CVE
CVE-2026-57403
Published
8 July 2026
CISA KEV
Not listed in CISA KEV at last catalog refresh
Impact
May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source

Data imported from Wordfence Intelligence (advisory d56e8a6f-f6fb-4a34-becc-f1b7abed02ca). Methodology and redistribution notes

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