PhpSpreadsheet Unbounded Row Index DoS in SpreadsheetML XML Reader CVE
Security AdvisoryHighPHPOffice
Affected:
- PhpSpreadsheet >=4.0.0 <=5.6.0
- PhpSpreadsheet >=3.3.0 <=3.10.4
- PhpSpreadsheet >=2.2.0 <=2.4.4
- PhpSpreadsheet >=2.0.0 <=2.1.15
- PhpSpreadsheet <=1.30.3
Fixed in:
- 5.7.0
- 3.10.5
- 2.4.5
- 2.1.16
- 1.30.4
Referenced CVEs: CVE-2026-40863 · 7.5
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