python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as <h9999999> in addition to <h1> through <h6>. This causes memory consumption.
{
"cwe_ids": [
"CWE-1284"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46656.json",
"cna_assigner": "mitre"
}{
"cpe": "cpe:2.3:a:matthewwithanm:markdownify:*:*:*:*:*:python:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "0.14.1"
}
],
"source": [
"AFFECTED_FIELD",
"CPE_RANGE"
]
}