Markdown Preview Enhanced before 0.8.28 opens external files and links from the preview through a shell and does not validate untrusted inputs taken from the markdown document - the diagram filename attribute, imported file paths, and the latex_engine code-chunk attribute. On Windows, a crafted markdown document can inject operating system commands that execute when the document is previewed. Fixed in 0.8.28 by passing these inputs as literal arguments instead of through a shell and validating them before use.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-78"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49492.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "0.8.28"
}
],
"source": [
"AFFECTED_FIELD",
"DESCRIPTION",
"REFERENCES"
]
}