CVE-2026-59931— PhpSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist

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

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the WEBSERVICE() domain whitelist can be bypassed via an HTTP redirect (SSRF). In Calculation/Web/Service.php, the webService() method validates a URL's host against the whitelist set via Spreadsheet::setDomainWhiteList(), then fetches content with file_get_contents($url, false, $ctx); because PHP's HTTP stream wrapper follows 301/302 redirects automatically (up to 20 hops) and the redirect target is never re-validated, an attacker who can trigger a redirect from a whitelisted domain can reach arbitrary URLs, including internal addresses. An attacker able to upload XLSX files to an application that uses setDomainWhiteList() and getCalculatedValue() can achieve a full-read SSRF, returning up to 32,767 bytes of the response body as a cell's calculated value, which enables exfiltration of cloud metadata (AWS/GCP/Azure credentials via http://169.254.169.254/), access to internal-only services, and internal port scanning (the port is not validated). This issue has been fixed in versions 5.8.1, 3.10.7, 2.4.7, 2.1.18, and 1.30.6.

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

服务端请求伪造(SSRF)

PHPOffice PhpSpreadsheet 服务端请求伪造漏洞

PHPOffice PhpSpreadsheet是PHPOffice组织开源的一款用于读取和写入电子表格文件的PHP库。 PHPOffice PhpSpreadsheet 1.30.6之前版本、2.0.0版本至2.1.18之前版本、2.2.0版本至2.4.7之前版本、3.3.0版本至3.10.7之前版本和4.0.0版本至5.8.1之前版本存在服务端请求伪造漏洞，该漏洞源于WEBSERVICE()域白名单可通过HTTP重定向绕过，导致服务端请求伪造（SSRF），攻击者可上传XLSX文件触发重定向，从而访问任

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