Threat intelligence

WebStack <= 1.2024 - Unauthenticated Arbitrary File Upload

CVE-2026-1555 · webstack

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

Vulnerability: WebStack <= 1.2024 - Unauthenticated Arbitrary File Upload
Affected software: webstack(Theme)
Affected versions: ≤ 1.2024
Authentication: Unauthenticated
Vulnerability type: Remote code execution
CVE: CVE-2026-1555
Published: 14 April 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run arbitrary code on the server if exploited.
Source: Data imported from Wordfence Intelligence (advisory b97805de-1b47-4c9f-baae-2e37c1b78570). Methodology and redistribution notes

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