Refine your search
1 vulnerability found for zscaler-mcp-server by Zscaler
CVE-2026-59563 (GCVE-0-2026-59563)
Vulnerability from cvelistv5
Published
2026-09-28 12:54
Modified
2026-09-28 13:31
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-305 - Authentication bypass by primary weakness
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Zscaler | zscaler-mcp-server |
Version: 0.7.0 < 0.7.2 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-59563",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-28T13:18:33.827712Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-28T13:31:27.587Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "zscaler-mcp-server",
"repo": "https://github.com/zscaler/zscaler-mcp-server",
"vendor": "Zscaler",
"versions": [
{
"lessThan": "0.7.2",
"status": "affected",
"version": "0.7.0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Sebasti\u00e1n Alba Vives"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"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."
}
],
"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."
}
],
"impacts": [
{
"capecId": "CAPEC-21",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-21 Exploitation of Trusted Identifiers"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-305",
"description": "CWE-305 Authentication bypass by primary weakness",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-28T12:54:52.446Z",
"orgId": "73c6f63b-efac-410d-a0a9-569700f85a04",
"shortName": "Zscaler"
},
"references": [
{
"url": "https://github.com/zscaler/zscaler-mcp-server/pull/41"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "HMAC Confirmation Token Unbinding in zscaler-mcp-server",
"x_generator": {
"engine": "Vulnogram 1.0.5"
}
}
},
"cveMetadata": {
"assignerOrgId": "73c6f63b-efac-410d-a0a9-569700f85a04",
"assignerShortName": "Zscaler",
"cveId": "CVE-2026-59563",
"datePublished": "2026-09-28T12:54:52.446Z",
"dateReserved": "2026-07-06T06:18:59.633Z",
"dateUpdated": "2026-09-28T13:31:27.587Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}