CVE•Published 2026-06-26•Modified 2026-08-25•0 articles on news•4 live references•NVD data

CVE-2026-12993Redhat · Build_of_apicurio_registry

Vulnerability data via NVD (ingested)

CVSS v3.1

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 84% of all CVEs

Weaknesses (CWE)

CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

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.

Timeline

Published 2026-06-26

Modified 2026-08-25

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-12993

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Redhat Build Of Apicurio Registry"

All exposed Redhat Build Of Apicurio Registry instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Build Of Apicurio Registry"

HTTP body or banner mentions "Build Of Apicurio Registry" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-12993