A flaw was found in Apicurio Registry. The DocumentBuilderAccessor correctly blocks external DTD and schema access but does not disable DOCTYPE declarations or enable FEATURE_SECURE_PROCESSING. An attacker with artifact-write permission can upload XML documents with internal entity-expansion payloads (billion-laughs variant) that cause CPU and heap exhaustion, partially mitigated by the JAXP default 64,000 entity-expansion limit.
{
"cwe_ids": [
"CWE-776"
],
"github_reviewed": true,
"github_reviewed_at": "2026-11-04T18:12:08Z",
"nvd_published_at": "2026-06-26T00:16:50Z",
"severity": "MODERATE"
}