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CVE-2024-56412: PhpSpreadsheet allows bypass XSS sanitizer using the javascript protocol and special characters

medium Affects phpoffice/phpexcel, phpoffice/phpspreadsheet. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

PhpSpreadsheet allows bypass XSS sanitizer using the javascript protocol and special characters

Package
phpoffice/phpexcel Composer
Affected versions
<=1.8.2
Fixed in
no fix recorded
Severity
medium  CVSS 5.4
Exploitation
not on CISA KEV · EPSS 0% (33.1th percentile)
Published
2025-01-03
Source
osv.dev

References

PhpSpreadsheet allows bypass XSS sanitizer using the javascript protocol and special characters

Package
phpoffice/phpspreadsheet Composer
Affected versions
>=3.0.0 and <3.7.0 or <1.29.7 or >=2.0.0 and <2.1.6 or >=2.2.0 and <2.3.5
Fixed in
3.7.0, 1.29.7, 2.1.6, 2.3.5
Severity
medium  CVSS 5.4
Exploitation
not on CISA KEV · EPSS 0% (33.1th percentile)
Published
2025-01-03
Source
osv.dev

References

CWE-79
NVD recordphpoffice/phpexcel advisoriesphpoffice/phpspreadsheet advisories

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