---
id: CVE-2026-12975
title: A flaw was found in Apicurio Registry
summary: >-
  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 …
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H'
cwe:
  - CWE-611
  - CWE-611
vendor: redhat
product: build_of_apicurio_registry
affected:
  - 'build_of_apicurio_registry >= 3.0, <= 3.2'
published: '2026-06-25'
updated: '2026-08-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12975'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:59360'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-12975'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2491688'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-12975'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2491688'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12975.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
epss: 0.00437
epssPercentile: 0.37475
ingestedAt: '2026-08-26T13:44:27.542Z'
---

## Overview

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.

## Affected

- `build_of_apicurio_registry >= 3.0, <= 3.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.