CVE-2026-108357
- Source
- https://cve.org/CVERecord?id=CVE-2026-108357
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108357.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-108357
- Aliases
-
- GHSA-rxj4-h86g-25gc
- Published
- 2026-10-22T17:38:16Z
- Modified
- 2026-10-23T02:45:26Z
- Severity
-
- 8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:L/SI:N/SA:N CVSS Calculator
- Summary
- PhpSpreadsheet: XmlScanner Bypass via Double-Encoded unentity() TOCTOU Allows XXE and Denial of Service
- Details
-
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. From 3.3.0 until 3.10.8 and 5.10.0, Reader\Xml passes stored SpreadsheetML XML through XmlScanner::scan in Xml::canRead and Xml::trySimpleXMLLoadStringPrivate, while Xml::unentity decodes numeric entities only after each DOCTYPE pattern check. A double-encoded less-than character is reduced by the first callback to another encoded character and by the second callback to a literal less-than sign, so SimpleXML receives an unchecked DOCTYPE and entity declaration. Processing attacker-controlled SpreadsheetML XML can cause entity-expansion denial of service and can permit local file access or SSRF on PHP before 8.0 or when LIBXML_NOENT is enabled. This issue is fixed in versions 3.10.8 and 5.10.0.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-611", "CWE-776" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108357.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108357.json
- https://github.com/PHPOffice/PhpSpreadsheet/commit/89f455c133e1a7e2d4abfadc43ce29eb7450d781
- https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1d2185b93738
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0
- https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-rxj4-h86g-25gc
- https://nvd.nist.gov/vuln/detail/CVE-2026-108357
Affected packages
Git / github.com/phpoffice/phpspreadsheet
Affected ranges
- Type
- GIT
- Repo
- https://github.com/phpoffice/phpspreadsheet
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "3.3.0" }, { "fixed": "3.10.8" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "4.0.0" }, { "fixed": "5.10.0" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "89f455c133e1a7e2d4abfadc43ce29eb7450d781" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "980b5c294493856f1a25754f1e8a1d2185b93738" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "3.10.8", "range": [ { "fixed": "fee9c1ca8d9f1f676f007ac1ab134ce43624bd52" } ], "source": "REFERENCES_TAG" }, { "original_tag": "5.10.0", "range": [ { "fixed": "eb18727acf6b1f4cc67145a52ab04f9fd4c28d53" } ], "source": "REFERENCES_TAG" } ] }