CVE-2026-12993
Medium
Description
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Redhat Build Of Apicurio Registry
PublishedJun 26, 2026
First seenJun 26, 2026
Weakness typeCWE-776CWE-776
How to fix
Update
- io.apicurio:apicurio-registry-schema-util-xml3.3.1, 3.2.6 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_apicurio_registry | 3.0 ≤ v ≤ 3.2 | — |
| io.apicurio:apicurio-registry-schema-util-xmlMaven | 3.3.0 ≤ v < 3.3.1, v < 3.2.6 | 3.3.1, 3.2.6 |
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