{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33467", "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "state": "PUBLISHED", "assignerShortName": "elastic", "dateReserved": "2026-03-20T10:53:23.100Z", "datePublished": "2026-04-28T21:15:24.551Z", "dateUpdated": "2026-04-28T21:15:24.551Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Elastic Package Registry", "vendor": "Elastic", "versions": [{"lessThanOrEqual": "1.37.0", "status": "affected", "version": "0.1.0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.</p>"}], "value": "Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed."}], "impacts": [{"capecId": "CAPEC-94", "descriptions": [{"lang": "en", "value": "CAPEC-94 Adversary in the Middle (AiTM)"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 5.9, "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "shortName": "elastic", "dateUpdated": "2026-04-28T21:15:24.551Z"}, "references": [{"url": "https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081"}], "source": {"discovery": "Elastic"}, "title": "Improper Verification of Cryptographic Signature in Elastic Package Registry Leading to Package Integrity Bypass", "x_generator": {"engine": "Elastic CVE Publisher 0.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed."}], "id": "CVE-2026-33467", "lastModified": "2026-04-28T22:16:48.823", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security@elastic.co", "type": "Secondary"}]}, "published": "2026-04-28T22:16:48.823", "references": [{"source": "security@elastic.co", "url": "https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081"}], "sourceIdentifier": "security@elastic.co", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security@elastic.co", "type": "Secondary"}]}

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