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Vulnerability Details :

CVE-2026-22569

Summary
Assigner-Zscaler
Assigner Org ID-73c6f63b-efac-410d-a0a9-569700f85a04
Published At-31 Mar, 2026 | 14:54
Updated At-31 Mar, 2026 | 17:24
Rejected At-
Credits

Incorrect startup configuration in ZCC

An incorrect startup configuration of affected versions of Zscaler Client Connector on Windows may cause a limited amount of traffic from being inspected under rare circumstances.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Zscaler
Assigner Org ID:73c6f63b-efac-410d-a0a9-569700f85a04
Published At:31 Mar, 2026 | 14:54
Updated At:31 Mar, 2026 | 17:24
Rejected At:
▼CVE Numbering Authority (CNA)
Incorrect startup configuration in ZCC

An incorrect startup configuration of affected versions of Zscaler Client Connector on Windows may cause a limited amount of traffic from being inspected under rare circumstances.

Affected Products
Vendor
Zscaler, Inc.Zscaler
Product
Zscaler Client Connector
Platforms
  • Windows
Default Status
unaffected
Versions
Affected
  • From 4.7 before 4.7.0.141 (custom)
  • From 4.8 before 4.8.0.63 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-1289CWE-1289 Improper validation of unsafe equivalence in input
Type: CWE
CWE ID: CWE-1289
Description: CWE-1289 Improper validation of unsafe equivalence in input
Metrics
VersionBase scoreBase severityVector
3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-554CAPEC-554 Functionality Bypass
CAPEC ID: CAPEC-554
Description: CAPEC-554 Functionality Bypass
Solutions

Configurations

Workarounds

Exploits

Credits

reporter
Jordan Eberst, CISA
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2025
N/A
Hyperlink: https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2025
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@zscaler.com
Published At:31 Mar, 2026 | 16:16
Updated At:06 Apr, 2026 | 15:15

An incorrect startup configuration of affected versions of Zscaler Client Connector on Windows may cause a limited amount of traffic from being inspected under rare circumstances.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Primary3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Type: Primary
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CPE Matches

Zscaler, Inc.
zscaler
>>client_connector>>Versions from 4.7(inclusive) to 4.7.0.141(exclusive)
cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:windows:*:*
Zscaler, Inc.
zscaler
>>client_connector>>Versions from 4.8(inclusive) to 4.8.0.63(exclusive)
cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:windows:*:*
Weaknesses
CWE IDTypeSource
CWE-1289Secondarycve@zscaler.com
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE ID: CWE-1289
Type: Secondary
Source: cve@zscaler.com
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2025cve@zscaler.com
Vendor Advisory
Hyperlink: https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2025
Source: cve@zscaler.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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Matching Score-8
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ShareView Details
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CVSS Score-8.2||HIGH
EPSS-0.03% / 9.30%
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Action-Not Available
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Product-client_connectorClient Connectorclient_connector
CWE ID-CWE-347
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Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-5.3||MEDIUM
EPSS-0.04% / 13.42%
||
7 Day CHG~0.00%
Published-28 May, 2026 | 15:29
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Hono: IP Restriction bypasses static deny rules for non-canonical IPv6

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after partial normalization. Non-canonical IPv6 representations of an address already listed in a static rule — such as compressed forms, explicit-zero forms, or hex-notation IPv4-mapped addresses — do not match the normalized rule entry, causing the rule to be silently skipped. This vulnerability is fixed in 4.12.21.

Action-Not Available
Vendor-honohonojs
Product-honohono
CWE ID-CWE-1289
Improper Validation of Unsafe Equivalence in Input
CWE ID-CWE-185
Incorrect Regular Expression
Details not found