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    CVE-2026-12993

    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.

    Published:Jun 10, 2026
    Last Modified:Aug 25, 2026
    EPS:Jun 25, 2026
    EPSS Score:0.00426
    CVSS Score:6.5

    Affected Products

    Vendor
    Redhat
    Product
    Apicurio Registry
    Vendor
    Redhat
    Product
    Build Of Apicurio Registry

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-197 Exponential Data Expansion

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High