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CVE-2026-59933: PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

HIGH CVSS 0.0

Published: July 23, 2026 | Last Modified: July 23, 2026

Description

PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

Ghostwire Analysis — What This Means Practically

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

Security Coverage (1 articles)

Tenable CVEs
CVE-2026-59933

References