CVE-2024-45048: XXE in PHPSpreadsheet encoding is returned

August 29, 2024 (updated September 13, 2024)

Bypassing the filter allows a XXE-attack. Which is turn allows attacker to obtain contents of local files, even if error reporting muted by @ symbol. (LFI-attack)

References

github.com/PHPOffice/PhpSpreadsheet
github.com/PHPOffice/PhpSpreadsheet/commit/bea2d4b30f24bcc8a7712e208d1359e603b45dda
github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-ghg6-32f9-2jp7
github.com/advisories/GHSA-ghg6-32f9-2jp7
nvd.nist.gov/vuln/detail/CVE-2024-45048

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