CVE-2026-40296

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

CVE-2026-40296 PhpSpreadsheet vulnerable to XSS in HTML writer via custom number format codes

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

EUVD-2026-28221

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

CVE-2026-40296

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

CVE-2026-40296 PhpSpreadsheet vulnerable to XSS in HTML writer via custom number format codes

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

CVE-2026-35453

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.3 and earlier, 2.0.0 through 2.1.15, 2.2.0 through 2.4.4, 3.3.0 through 3.10.4, and 4.0.0 through 5.6.0, the HTML Writer skips htmlspecialchars output escaping when a cell uses a custom number format containin...

PhpSpreadsheet 跨站脚本漏洞

PhpSpreadsheet is a PHP library developed by PHPOffice, designed for reading and writing spreadsheet files. Versions prior to PhpSpreadsheet 5.7.0, 3.10.5, 2.4.5, 2.1.16, and 1.30.4 contained a cross-site scripting vulnerability. This vulnerability stemmed from HTML writers skipping...

CVE-2026-35453

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.3 and earlier, 2.0.0 through 2.1.15, 2.2.0 through 2.4.4, 3.3.0 through 3.10.4, and 4.0.0 through 5.6.0, the HTML Writer skips htmlspecialchars output escaping when a cell uses a custom number format containin...

CVE-2026-34084

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-2026-35453 PhpSpreadsheet XSS via number format text substitution in HTML Writer

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.3 and earlier, 2.0.0 through 2.1.15, 2.2.0 through 2.4.4, 3.3.0 through 3.10.4, and 4.0.0 through 5.6.0, the HTML Writer skips htmlspecialchars output escaping when a cell uses a custom number format containin...

CVE-2026-35453 PhpSpreadsheet XSS via number format text substitution in HTML Writer

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.3 and earlier, 2.0.0 through 2.1.15, 2.2.0 through 2.4.4, 3.3.0 through 3.10.4, and 4.0.0 through 5.6.0, the HTML Writer skips htmlspecialchars output escaping when a cell uses a custom number format containin...

CVE-2026-35453

PhpSpreadsheet contains an XSS vulnerability in the HTML Writer when a cell uses a custom number format with an @ placeholder and additional literal text. The formatter returns early and escaping via htmlspecialchars() is skipped, allowing injected HTML/JavaScript in the generated HTML. Affected ...

CVE-2026-35453

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.3 and earlier, 2.0.0 through 2.1.15, 2.2.0 through 2.4.4, 3.3.0 through 3.10.4, and 4.0.0 through 5.6.0, the HTML Writer skips htmlspecialchars output escaping when a cell uses a custom number format containin...

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 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

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...

PhpSpreadsheet 代码问题漏洞

PhpSpreadsheet is a PHP library developed by PHPOffice, designed for reading and writing spreadsheet files. Code vulnerabilities exist in versions 1.30.2 and earlier, as well as versions 2.0.0 to 2.1.14, 2.2.0 to 2.4.3, 3.3.0 to 3.10.3, and 4.0.0 to 5.5.0 of PhpSpreadsheet. These vulnerabilities...

PhpSpreadsheet 跨站脚本漏洞

PhpSpreadsheet is a PHP library developed by PHPOffice, designed for reading and writing spreadsheet files. PhpSpreadsheet has a cross-site scripting vulnerability. This vulnerability arises when the HTML Writer skips htmlspecialchars output escaping when using custom number formats that contain ...

Cross-site Scripting (XSS)

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Cross-site Scripting XSS through the readRowAttributes process. An attacker can exhaust CPU and memory resources by submitting a...