[HIGH] PHPSpreadsheet: Gnumeric reader unbounded gzip expansion causes memory exhaustion

PKSA-m9cr-9614-rsf7 CVE-2026-59932 GHSA-2mrg-gjxq-2gvr

Affected package: phpoffice/phpspreadsheet

Affected version: <=1.30.5|>=2.0.0,<=2.1.17|>=2.2.0,<=2.4.6|>=3.3.0,<=3.10.6|>=4.0.0,<=5.8.0

Reported by:
GitHub