Medium
HMAC Confirmation Token Unbinding in zscaler-mcp-server
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.
Announced Source revision 1
Original source ↗CVE-2026-59563
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-59563
zscaler-mcp-server
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"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"
}
]- Related CVEs
- CVE-2026-59563
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #3085 · Revision 1
- Added to Heist Feed
- Publisher date