Bypass XSS sanitizer using the javascript protocol and special characters in phpoffice/phpspreadsheet
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
phpoffice/phpspreadsheet is a pure PHP library for reading and writing spreadsheet files. Affected versions have been found to have a Bypass of the Cross-site Scripting (XSS) sanitizer using the javascript protocol and special characters. This issue has been addressed in versions 3.9.0, 2.3.7, 2.1.8, and 1.29.9. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| PHPOffice | PhpSpreadsheet | 3.0.0 to before 3.9.0; 2.2.0 to before 2.3.7; 2.0.0 to before 2.1.8; before 1.29.9 | 3.9.0, 2.3.7, 2.1.8, 1.29.9 | Patch available | CNA |
| — | phpoffice/phpspreadsheet (Packagist) | 3.0.0 to before 3.9.0 | 3.9.0 | Patch available | GHSA-r57h-547h-w24f |
| — | phpoffice/phpspreadsheet (Packagist) | before 1.29.9 | 1.29.9 | Patch available | GHSA-r57h-547h-w24f |
| — | phpoffice/phpspreadsheet (Packagist) | 2.2.0 to before 2.3.7 | 2.3.7 | Patch available | GHSA-r57h-547h-w24f |
| — | phpoffice/phpspreadsheet (Packagist) | 2.0.0 to before 2.1.8 | 2.1.8 | Patch available | GHSA-r57h-547h-w24f |
| — | phpoffice/phpexcel (Packagist) | up to 1.8.2 | — | No fix listed | GHSA-r57h-547h-w24f |
- PhpSpreadsheet VendorPHPOffice Affected 3.0.0 to before 3.9.0; 2.2.0 to before 2.3.7; 2.0.0 to before 2.1.8; before 1.29.9 Fixed in 3.9.0, 2.3.7, 2.1.8, 1.29.9 Patch available CNA
- phpoffice/phpspreadsheet (Packagist) Vendor— Affected 3.0.0 to before 3.9.0 Fixed in 3.9.0 Patch available GHSA-r57h-547h-w24f
- phpoffice/phpspreadsheet (Packagist) Vendor— Affected before 1.29.9 Fixed in 1.29.9 Patch available GHSA-r57h-547h-w24f
- phpoffice/phpspreadsheet (Packagist) Vendor— Affected 2.2.0 to before 2.3.7 Fixed in 2.3.7 Patch available GHSA-r57h-547h-w24f
- phpoffice/phpspreadsheet (Packagist) Vendor— Affected 2.0.0 to before 2.1.8 Fixed in 2.1.8 Patch available GHSA-r57h-547h-w24f
- phpoffice/phpexcel (Packagist) Vendor— Affected up to 1.8.2 Fixed in — No fix listed GHSA-r57h-547h-w24f
Remediation
- Fix · CNA PhpSpreadsheet (PHPOffice) Fixed in 3.9.0, 2.3.7, 2.1.8, 1.29.9
- Fix · GHSA-r57h-547h-w24f phpoffice/phpspreadsheet (Packagist) Fixed in 3.9.0 Advisory →
- Fix · GHSA-r57h-547h-w24f phpoffice/phpspreadsheet (Packagist) Fixed in 1.29.9 Advisory →
- Fix · GHSA-r57h-547h-w24f phpoffice/phpspreadsheet (Packagist) Fixed in 2.3.7 Advisory →
- Fix · GHSA-r57h-547h-w24f phpoffice/phpspreadsheet (Packagist) Fixed in 2.1.8 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-23210
- 2026-10-03 Alias added: GHSA-r57h-547h-w24f
References
More PHPOffice vulnerabilities
- TI-2026-32885 PhpSpreadsheet: File::prohibitWrappers bypass CVSS 4.0CRITICAL 9.2
- TI-2026-26406 PhpSpreadsheet SSRF and RCE via PHP stream wrappers in IOFactory::load CVSS 4.0CRITICAL 9.2
- TI-2026-79412 PhpSpreadsheet ODS reader exhausts CPU and memory via repeated rows CVSS 4.0HIGH 8.7
- TI-2025-34182 PhpSpreadsheet vulnerable to SSRF when reading and displaying a processed HTML document in the browser CVSS 4.0HIGH 8.7
- TI-2026-78784 Insecure deserialization in PHPOffice PHPPresentation allows code execution CVSS 4.0CRITICAL 9.2
- TI-2024-37339 PhpSpreadsheet vulnerable to unauthorized reflected XSS in Currency.php file CVSS 4.0HIGH 8.3
Sources
- CVE-2025-23210 · CVE Program
- CVE-2025-23210 · NVD
- FIRST EPSS
- GHSA-r57h-547h-w24f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences