CVE-2026-45034: Deserialization of Untrusted Data

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.5, CVE-2026-34084 was patched by the helper File::prohibitWrappers. The helper calls parseurl$filename, PHPURLSCHEME and then checks isstring$scheme && strlen$scheme 1 to reject stream wrappers such as...

Server-Side Request Forgery (SSRF)

PhpSpreadsheet is vulnerable to Server-Side Request Forgery SSRF. The vulnerability is due to insufficient validation of user-controlled filenames passed to IOFactory::load, which allows an attacker to supply malicious PHP stream wrapper paths such as phar:// to trigger PHAR deserialization and...

CVE-2026-34084 PhpSpreadsheet SSRF and RCE via PHP stream wrappers in IOFactory::load

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.2 and earlier, 2.0.0 through 2.1.14, 2.2.0 through 2.4.3, 3.3.0 through 3.10.3, and 4.0.0 through 5.5.0, when the filename argument to IOFactory::load is user-controlled, an attacker can supply a PHP stream...

CVE-2026-34084

CVE-2026-34084 describes a vulnerability in PhpSpreadsheet where IOFactory::load() with a user-controlled filename can pass PHP stream wrappers (phar://, ftp://, ssh2.sftp://) to is_file(), triggering PHAR deserialization and potential remote code execution if an appropriate gadget chain exists. ...

CVE-2026-34084: Deserialization of Untrusted Data

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.2 and earlier, 2.0.0 through 2.1.14, 2.2.0 through 2.4.3, 3.3.0 through 3.10.3, and 4.0.0 through 5.5.0, when the filename argument to IOFactory::load is user-controlled, an attacker can supply a PHP stream...

GHSA-Q4Q6-R8WH-5CGH PhpSpreadsheet has SSRF/RCE in IOFactory::load when $filename is user controlled

The usage of isfile, used to verify if the $filename is indeed an actual file, by all? Reader implementations inside the helper function File::assertFile is php-wrapper aware, for any php wrappers implementing stat. The 3 wrappers ftp://, phar:// and ssh2.sftp://, all satisfy this requirement - 2...

Server-side Request Forgery (SSRF)

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the IOFactory::load function. An attacker can execute arbitrary code or initiate unauthoriz...

XML External Entity (XXE) Injection

Overview Affected versions of this package are vulnerable to XML External Entity XXE Injection via the IOFactory::load function. An attacker can read local files or potentially execute arbitrary code by uploading a malicious XLSX template that contains a specially crafted XML payload. This is onl...

Kimai has an XXE Leading to Local File Read

Summary Kimai uses PHPSpreadsheet for importing and exporting invoices. Recently, a CVE was identified in PHPSpreadsheet, which could lead to an XXE vulnerability. Details Exploitation requires an Administrator account, allowing the upload of an XLSX template containing the payload. The...