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CVE-2026-108357 PhpSpreadsheet: XmlScanner Bypass via Double-Encoded unentity() TOCTOU Allows XXE and Denial of Service

🗓️ 22 Oct 2026 17:38:16Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

XmlScanner bypass in PhpSpreadsheet allows XXE and DoS via double-encoded entities.

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Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-108357
22 Oct 202617:43
–circl
cve
CVE
CVE-2026-108357
22 Oct 202617:38
–cve
euvd
EUVD
EUVD-2026-108242
22 Oct 202617:38
–euvd
nvd
NVD
CVE-2026-108357
22 Oct 202618:17
–nvd
[
  {
    "vendor": "PHPOffice",
    "product": "PhpSpreadsheet",
    "versions": [
      {
        "version": ">= 3.3.0, < 3.10.8",
        "status": "affected"
      },
      {
        "version": ">= 4.0.0, < 5.10.0",
        "status": "affected"
      }
    ]
  }
]

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