Cross-site Scripting vulnerability in SimpleXLSXEx::readXfs and SimpeXLSX::toHTMLEx
Impact
When calling the extended toHTMLEx method, it is possible to execute arbitrary JavaScript code.
Patches
The supplied patch resolves this vulnerability for SimpleXLSX. Use 1.1.12
Workarounds
Don't use direct publication via toHTMLEx
This vulnerability was discovered by Aleksey Solovev (Positive Technologies)
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | shuchkin/simplexlsx | >= 1.0.12, < 1.1.12 | 1.1.12 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N- Weakness (CWE)
CWE-79- Platform
- Composer
- Package
shuchkin/simplexlsx- Disclosed
- 12.12.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-x6mh-rjwm-8ph7 - CC BY 4.0
Vulnerability history: shuchkin/simplexlsx
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 12.2024 12.2024
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 2
Disclosures per year
- 2024: 2
- 2025: 0
- 2026: 0
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Cross-site Scripting vulnerability in SimpleXLSXEx::readXfs and SimpeXLSX::toHTMLEx this entry
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