Medium severity6.8OSV Advisory· Published Dec 12, 2024· Updated Jun 17, 2026

CVE-2024-55878

Description

SimpleXLSX is software for parsing and retrieving data from Excel XLSx files. Starting in version 1.0.12 and prior to version 1.1.12, when calling the extended toHTMLEx method, it is possible to execute arbitrary JavaScript code. Version 1.1.12 fixes the issue. As a workaround, don't use direct publication via toHTMLEx.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
shuchkin/simplexlsxPackagist	>= 1.0.12, < 1.1.12	1.1.12

Affected products

Shuchkin/SimplexlsxOSV
Range: 1.0.12, 1.0.13, 1.0.14, …
ghsa-coords
pkg:composer/shuchkin/simplexlsx
Range: >= 1.0.12, < 1.1.12

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-x6mh-rjwm-8ph7ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2024-55878ghsaADVISORY
github.com/shuchkin/simplexlsx/commit/cb4e716259e83d18e89292a4f1b721f4d34e28c2nvdWEB
github.com/shuchkin/simplexlsx/security/advisories/GHSA-x6mh-rjwm-8ph7nvdWEB

News mentions

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cvss	0.442
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000