CVE-2026-108357Published

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

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-108357

Published

PhpSpreadsheet

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "PHPOffice",
                    "product": "PhpSpreadsheet",
                    "versions": [
                        {
                            "version": ">= 3.3.0, < 3.10.8",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.0.0, < 5.10.0",
                            "status": "affected"
                        }
                    ]
                }