Is phpoffice/phpspreadsheet affected by CVE-2024-56366?

Packagist phpoffice/phpspreadsheet is affected in >=3.0.0 =2.0.0 =2.2.0 <2.3.5.

Is CVE-2024-56366 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

high

CVE-2024-56366

Q: Is CVE-2024-56366 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

Packagist · phpoffice/phpspreadsheet • Packagist · phpoffice/phpexcel

Summary

PhpSpreadsheet allows unauthorized Reflected XSS in the Accounting.php file

Severity: high
EPSS: 0.3% (p23)
Also known as: GHSA-c6fv-7vh8-2rhr#phpoffice/phpexcel, GHSA-c6fv-7vh8-2rhr#phpoffice/phpspreadsheet
Published: 2025-01-03

References

Related advisories

CVE-2026-45034 — critical · Packagist/phpoffice/phpspreadsheet
CVE-2026-34084 — critical · Packagist/phpoffice/phpspreadsheet
CVE-2026-40902 — high · Packagist/phpoffice/phpspreadsheet
CVE-2026-40863 — high · Packagist/phpoffice/phpspreadsheet
CVE-2025-54370 — high · Packagist/phpoffice/phpspreadsheet
CVE-2024-56409 — high · Packagist/phpoffice/phpspreadsheet
CVE-2024-56365 — high · Packagist/phpoffice/phpspreadsheet
CVE-2024-56408 — high · Packagist/phpoffice/phpspreadsheet

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.