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PHPSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist

🗓️ 23 Jul 2026 14:55:48Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 13 Views

SSRF in PhpSpreadsheet WEBSERVICE: whitelist checks only initial host; redirects can reach internal URLs.

Related
Detection
Refs
Vulners
Node
OR
phpofficephpspreadsheetRange1.30.5composer
phpofficephpspreadsheetRange2.0.02.1.17composer
phpofficephpspreadsheetRange2.2.02.4.6composer
phpofficephpspreadsheetRange3.3.03.10.6composer
phpofficephpspreadsheetRange4.0.05.8.0composer

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23 Jul 2026 14:55Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.7
EPSS0.00531
SSVC
13