CVE-2026-59563

{"id": "CVE-2026-59563", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59563", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-28T13:18:33.827712Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@zscaler.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.6, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 2.1}]}, "affected": [{"source": "cve@zscaler.com", "affectedData": [{"repo": "https://github.com/zscaler/zscaler-mcp-server", "vendor": "Zscaler", "product": "zscaler-mcp-server", "versions": [{"status": "affected", "version": "0.7.0", "lessThan": "0.7.2", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-28T13:17:22.160", "references": [{"url": "https://github.com/zscaler/zscaler-mcp-server/pull/41", "source": "cve@zscaler.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "cve@zscaler.com", "description": [{"lang": "en", "value": "CWE-305"}]}], "descriptions": [{"lang": "en", "value": "Zscaler MCP Server versions 0.7.0 and 0.7.1 has an issue where HMAC confirmation tokens were not bound to the target resource identifier, allowing an MCP client or agent to replay a token generated for one resource to affect another resource of the same type. This issue is fixed in version 0.7.2."}], "lastModified": "2026-09-28T15:17:17.493", "sourceIdentifier": "cve@zscaler.com"}