phpoffice/phpspreadsheet Security Advisories for 1.30.2 (9)
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[HIGH] PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion
PKSA-r22k-87hv-mfk4 CVE-2026-59933 GHSA-xh5m-36r6-47m3
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 -
[HIGH] PHPSpreadsheet: Gnumeric reader unbounded gzip expansion causes memory exhaustion
PKSA-m9cr-9614-rsf7 CVE-2026-59932 GHSA-2mrg-gjxq-2gvr
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 -
[HIGH] PHPSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist
PKSA-dqzt-yst9-1w9y CVE-2026-59931 GHSA-6hq5-7373-42rg
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 -
[CRITICAL] PHPSpreadsheet has a patch bypass for CVE-2026-34084
PKSA-x678-4z45-v3d5 CVE-2026-45034 GHSA-87m4-826x-3crx
Affected version: <=1.30.4
Reported by:
GitHub -
[HIGH] PhpSpreadsheet has CPU Denial of Service via Unbounded Row Number in XLSX Row Dimensions
PKSA-gz3f-3cz3-3wsw CVE-2026-40902 GHSA-7c6m-4442-2x6m
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet has CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader
PKSA-x13r-n4wc-4gcr CVE-2026-40863 GHSA-84wq-86v6-x5j6
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub -
[CRITICAL] PhpSpreadsheet has SSRF/RCE in IOFactory::load when $filename is user controlled
PKSA-8cfg-tzhf-fr83 CVE-2026-34084 GHSA-q4q6-r8wh-5cgh
Affected version: <=1.30.2|>=2.0.0,<=2.1.14|>=2.2.0,<=2.4.3|>=3.3.0,<=3.10.3|>=4.0.0,<=5.5.0
Reported by:
GitHub -
[MEDIUM] PhpSpreadsheet has XSS via number format code with @ text placeholder bypasses htmlspecialchars in HTML writer
PKSA-hznc-gbby-6w16 CVE-2026-40296 GHSA-hrmw-qprp-wgmc
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub -
[MEDIUM] PhpSpreadsheet has XSS via NumberFormat @ Text Substitution in HTML Writer
PKSA-jtdk-dcr5-f11n CVE-2026-35453 GHSA-6wpp-88cp-7q68
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub