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Vulnerability Database · Packagist · phpoffice/phpspreadsheet · Version

phpoffice/phpspreadsheet 4.3.1

4.3.1 is affected by 8 vulnerabilities.

The vulnerabilities that cover this exact version are listed below with the fixed version to move to.

Critical 0 High 6 Medium 2 Low 0 Unrated 0

All phpoffice/phpspreadsheet versions & vulnerabilities → Search the database for this package →
Database updated 23/Oct/2026

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01 Vulnerabilities affecting this version

phpoffice/phpspreadsheet 4.3.1 vulnerabilities

8 vulnerabilities cover phpoffice/phpspreadsheet 4.3.1. Open the full list in the database.

Vulnerability Severity Fixed version Disclosed
CVE-2026-59931: PHPSpreadsheet SSRF Bypass via HTTP Redirect in WEBSERVICE() Domain Whitelist 7.7 high 5.8.1 23 Jul 2026
CVE-2026-59933: PHPSpreadsheet Memory Exhaustion Due to XLS/OLE Sector-Chain Self-Loop 7.5 high 5.8.1 23 Jul 2026
CVE-2026-59932: PHPSpreadsheet Gnumeric Reader Unbounded Gzip Expansion Causes Memory Exhaustion 7.5 high 5.8.1 23 Jul 2026
CVE-2026-40902: PhpSpreadsheet CPU Denial of Service via Unbounded Row Number in XLSX Row Dimensions 7.5 high 5.7.0 29 Apr 2026
CVE-2026-40863: PhpSpreadsheet CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader 7.5 high 5.7.0 29 Apr 2026
CVE-2026-40296: PhpSpreadsheet XSS Vulnerability via Custom Number Format Codes 5.4 medium 5.7.0 28 Apr 2026
CVE-2026-35453: PhpSpreadsheet XSS Vulnerability via NumberFormat in HTML Writer 5.3 medium 5.7.0 28 Apr 2026
CVE-2026-34084: PhpSpreadsheet SSRF/RCE Vulnerability in IOFactory::load with User Controlled Filename N/A high 5.6.0 29 Apr 2026

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Questions

About phpoffice/phpspreadsheet 4.3.1

Is phpoffice/phpspreadsheet 4.3.1 vulnerable?

Yes. 8 vulnerabilities in the Vulert database cover phpoffice/phpspreadsheet 4.3.1: 0 critical, 6 high, 2 medium and 0 low. Each entry above names the fixed version to move to.

How do I monitor phpoffice/phpspreadsheet for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the phpoffice/phpspreadsheet version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.