CVE-2026-108358

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, XmlScanner::scan in src/PhpSpreadsheet/Reader/Security/XmlScanner.php uses a DOCTYPE detection pattern that accounts for NUL-byte interleaving but not ISO-2022 escap...

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

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...

CVE-2026-108357

The PhpSpreadsheet library (versions 3.3.0 through 3.10.8 and 5.10.0) is vulnerable to an XmlScanner Bypass due to a Time-of-Check to Time-of-Use (TOCTOU) flaw in the Xml::unentity function. The root cause is that numeric entities are decoded after each DOCTYPE pattern check; a double-encoded les...

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

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...

CVE-2026-108358

The PhpSpreadsheet library (prior to versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0) contains a vulnerability in XmlScanner::scan within src/PhpSpreadsheet/Reader/Security/XmlScanner.php. The scanner's DOCTYPE detection pattern fails to account for ISO-2022 escape sequences in XLSX XML parts....

CVE-2026-108358 PhpSpreadsheet: XmlScanner Bypass via ISO-2022 Escape Sequences Allows XXE and Denial of Service

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, XmlScanner::scan in src/PhpSpreadsheet/Reader/Security/XmlScanner.php uses a DOCTYPE detection pattern that accounts for NUL-byte interleaving but not ISO-2022 escap...

EUVD-2026-108265

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, XmlScanner::scan in src/PhpSpreadsheet/Reader/Security/XmlScanner.php uses a DOCTYPE detection pattern that accounts for NUL-byte interleaving but not ISO-2022 escap...

CVE-2026-108358 PhpSpreadsheet: XmlScanner Bypass via ISO-2022 Escape Sequences Allows XXE and Denial of Service

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, XmlScanner::scan in src/PhpSpreadsheet/Reader/Security/XmlScanner.php uses a DOCTYPE detection pattern that accounts for NUL-byte interleaving but not ISO-2022 escap...

CLEANSTART-2026-UI56103 XMLscanner

Security vulnerability affects the apache-hive package. XMLscanner...

CLEANSTART-2026-OW18988 XMLScanner

Security vulnerability affects the apache-hive package. XMLScanner...

EUVD-2024-3279

Malicious code in bioql PyPI...

XML External Entity (XXE) Injection

Overview Affected versions of this package are vulnerable to XML External Entity XXE Injection via the scan method in the XmlScanner class. Exploiting this vulnerability is possible when using a UTF-7 encoded payload, including at the end of the file a comment with the value encoding="UTF-8" with...

CVE-2024-48917

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The XmlScanner class has a scan method which should prevent XXE attacks. However, in a bypass of the previously reported CVE-2024-47873, the regexes from the findCharSet method, which is used for determining the current...

XXE in PHPSpreadsheet's XLSX reader

Summary The XmlScanner class has a scan method which should prevent XXE attacks. However, we found another bypass than the previously reported CVE-2024-47873, the regexes from the findCharSet method, which is used for determining the current encoding can be bypassed by using a payload in the...

GHSA-7CC9-J4MV-VCJP XXE in PHPSpreadsheet's XLSX reader

Summary The XmlScanner class has a scan method which should prevent XXE attacks. However, we found another bypass than the previously reported CVE-2024-47873, the regexes from the findCharSet method, which is used for determining the current encoding can be bypassed by using a payload in the...

GHSA-JW4X-V69F-HH5W XmlScanner bypass leads to XXE

Summary The XmlScanner class has a scan method which should prevent XXE attacks. However, the regexes used in the scan method and the findCharSet method can be bypassed by using UCS-4 and encoding guessing as described in . Details The scan method converts the input in the UTF-8 encoding if it is...

XmlScanner bypass leads to XXE

Summary The XmlScanner class has a scan method which should prevent XXE attacks. However, the regexes used in the scan method and the findCharSet method can be bypassed by using UCS-4 and encoding guessing as described in . Details The scan method converts the input in the UTF-8 encoding if it is...

CVE-2024-48917 XXE in PHPSpreadsheet's XLSX reader

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The XmlScanner class has a scan method which should prevent XXE attacks. However, in a bypass of the previously reported CVE-2024-47873, the regexes from the findCharSet method, which is used for determining the current...

CVE-2024-48917

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The "XmlScanner" class has a scan method which should prevent XXE attacks. However, in a bypass of the previously reported "CVE-2024-47873", the regexes from the "findCharSet" method, which is used for determining the...

CVE-2024-48917

CVE-2024-48917 (PhpSpreadsheet XXE bypass) : The XmlScanner in PhpSpreadsheet can be bypassed via the encoding detection logic (findCharSet) when processing XML with UTF-7 payloads, allowing an XML External Entity attack. A comment injection at the end of the file encoding tag (e.g., encoding="UT...