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CVE-2026-12975— Apicurio/apicurio-registry: apicurio-registry: unhardened saxparser in content-type detection leads to blind xxe / ssrf / billion-laughs dos

CVSS 8.5 · High EPSS 0.21% · P11

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-12975

Vulnerability Information
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Vulnerability Title
Apicurio/apicurio-registry: apicurio-registry: unhardened saxparser in content-type detection leads to blind xxe / ssrf / billion-laughs dos
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Apicurio Registry. The ContentTypeUtil.isParsableXml() method creates a SAXParserFactory without enabling secure processing features or disabling external entity resolution. An attacker with artifact-write permission (or unauthenticated when the registry runs with default configuration) can upload a crafted XML document to trigger blind server-side request forgery (SSRF) via external DTD/entity fetch, or cause denial of service via entity expansion.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat build of Apicurio Registry 3-cpe:/a:redhat:apicurio_registry:3
Red HatRed Hat build of Apicurio Registry 3-cpe:/a:redhat:apicurio_registry:3

II. Public POCs for CVE-2026-12975

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III. Intelligence Information for CVE-2026-12975

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Other References for CVE-2026-12975 (2)

Same Patch Batch · Red Hat · 2026-06-25 · 13 CVEs total

CVE-2026-118008.1 HIGHOrg.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusio
CVE-2026-98008.1 HIGHKeycloak: keycloak policy enforcer: authorization bypass via incorrect uri comparison
CVE-2026-90997.7 HIGHKeycloak: group-admin escalation to realm-admin
CVE-2026-129927.4 HIGHApicurio/apicurio-registry: apicurio-registry: ssrf via wsdl4j import dereference in wsdl
CVE-2026-90867.3 HIGHKeycloak: keycloak: cross-site scripting (xss) via case-insensitive uri validation bypass
CVE-2026-130836.9 MEDIUMPen-drive: pen-drive: stored xss via unescaped cluster data in html report
CVE-2026-129936.5 MEDIUMApicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via
CVE-2026-97056.5 MEDIUMKeycloak: keycloak: attacker can re-enable and take over disabled clients via registration
CVE-2026-133186.4 MEDIUMVirt-api-rhel9: kubevirt: kubevirt: ssrf in virt-api port-forward via unvalidated guest-ag
CVE-2026-90834.9 MEDIUMKeycloak: keycloak: information disclosure through arbitrary filesystem path probing
CVE-2026-97994.6 MEDIUMKeycloak: keycloak: unauthorized access to resources via uma permission ticket bypass
CVE-2026-132184.2 MEDIUMKubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from

IV. Related Vulnerabilities

Same product: Red Hat build of Apicurio Registry 3
Same vendor: Red Hat
Same weakness: CWE-611

V. Comments for CVE-2026-12975

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