Cross-site scripting (XSS) vulnerability in simple-upload-53.php in CityPost Simple PHP Upload 5.3 allows remote attackers to inject arbitrary web script or HTML via the message parameter.
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Cross-site scripting (XSS) vulnerability in simple-upload-53.php in CityPost Simple PHP Upload 5.3 allows remote attackers to inject arbitrary web script or HTML via the message parameter.
December 31, 2005
April 16, 2026
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
CityPost Simple PHP Upload - 'Simple-upload-53.php' Cross-Site Scripting
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