{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33222", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-17T23:23:58.315Z", "datePublished": "2026-03-25T20:10:51.107Z", "dateUpdated": "2026-03-25T20:10:51.107Z"}, "containers": {"cna": {"title": "NATS JetStream has an authorization bypass through its Management API", "problemTypes": [{"descriptions": [{"cweId": "CWE-285", "lang": "en", "description": "CWE-285: Improper Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9c", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9c"}, {"name": "https://advisories.nats.io/CVE/secnote-2026-12.txt", "tags": ["x_refsource_MISC"], "url": "https://advisories.nats.io/CVE/secnote-2026-12.txt"}], "affected": [{"vendor": "nats-io", "product": "nats-server", "versions": [{"version": "< 2.11.15", "status": "affected"}, {"version": ">= 2.12.0-RC.1, < 2.12.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-25T20:10:51.107Z"}, "descriptions": [{"lang": "en", "value": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, users with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, if developers have configured users to have limited JetStream restore permissions, temporarily remove those permissions."}], "source": {"advisory": "GHSA-9983-vrx2-fg9c", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, users with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, if developers have configured users to have limited JetStream restore permissions, temporarily remove those permissions."}], "id": "CVE-2026-33222", "lastModified": "2026-03-25T21:16:47.237", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-25T21:16:47.237", "references": [{"source": "security-advisories@github.com", "url": "https://advisories.nats.io/CVE/secnote-2026-12.txt"}, {"source": "security-advisories@github.com", "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9c"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-03-25T21:37:25.055850+00:00", "value": {"mitigation_remediation": ["Upgrade nats-server to version 2.11.15 or later, or 2.12.6 or later", "If an upgrade is not immediately possible, temporarily remove JetStream restore permissions for all users"], "summary": {"action": "Patch immediately", "impact": "Authorization bypass allowing unauthorized stream restoration"}, "threat_synthesis": {"affected_systems": "The vulnerability affects nats-io nats-server versions prior to 2.11.15 and 2.12.6. These builds lack the fix that restricts restore operations to the authorized stream.\n", "description_and_impact": "NATS-Server\u2019s JetStream Management API permits a user who can restore a stream to restore to any stream name, bypassing authorization controls. This flaw allows an attacker with JetStream admin access to modify or overwrite data that should have been protected, violating data integrity and confidentiality.\n", "risk_and_exploitability": "The flaw carries a CVSS score of 4.9 and is not listed in the CISA KEV catalog. Exploitation requires access to the JetStream Management API with restore permissions, so the attack surface is limited to internal users or compromised accounts. Despite the moderate score, the potential for unintentional data loss or tampering makes the risk significant without remediation."}}}}, "created": "2026-03-25T21:46:16.232531+00:00", "updated": "2026-03-25T21:46:16.232688+00:00", "vendors": []}