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Version 1.0.0-alpha.79 fixes the issue."}], "id": "CVE-2026-22043", "lastModified": "2026-01-15T21:13:08.733", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-01-08T15:15:45.583", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/rustfs/rustfs/security/advisories/GHSA-xgr5-qc6w-vcg9"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/rustfs/rustfs/security/advisories/GHSA-xgr5-qc6w-vcg9"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-284"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-522"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-18T07:39:40.304114+00:00", "value": {"mitigation_remediation": ["Upgrade RustFS to version 1.0.0\u2011alpha.79 or later to receive the fix.", "Restrict the creation of new service accounts by enforcing stricter IAM policies or removing the minting privilege from all current service accounts.", "Audit IAM policies and logs for unexpected service account creation, and monitor for privilege escalation activity."], "summary": {"action": "Apply Patch", "impact": "Privilege Escalation"}, "threat_synthesis": {"affected_systems": "The vulnerability affects RustFS releases 1.0.0\u2011alpha.13 through 1.0.0\u2011alpha.78. The affected vendor is RustFS, and the product is the RustFS object storage system. Versions newer than 1.0.0\u2011alpha.78, notably 1.0.0\u2011alpha.79 and later, have the bug resolved.", "description_and_impact": "RustFS, a Rust\u2011based distributed object storage, contains a flaw in its identity and access management layer. The deny_only short\u2011circuit allows a constrained service account or short\u2011term security credential to mint a new, unrestricted service account that inherits the full privileges of its parent. The result is an attacker able to run arbitrary commands, read or write protected data, or otherwise gain unrestricted access. This issue is rooted in improper authority and access control checks as reflected by CWE\u2011269 and CWE\u2011284.", "risk_and_exploitability": "The CVSS score of 5.7 indicates a medium severity. EPSS is less than 1%, implying a low yet non\u2011zero chance of active exploitation. KEV does not list the issue, suggesting no confirmed exploitation at the time of analysis. The flaw requires the attacker to already possess a restricted service account or an STS credential; once that authentication is available, the attacker can elevate privileges by minting a new unrestricted account. Attackers would typically perform this within an environment where IAM delegation is enabled."}}}}, "created": "2026-01-09T13:24:51.553135+00:00", "updated": "2026-04-18T07:45:24.981292+00:00", "vendors": ["rustfs", "rustfs$PRODUCT$rustfs"]}