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    CVE-2023-28799

    A URL parameter during login flow was vulnerable to injection. An attacker could insert a malicious domain in this parameter, which would redirect the user after auth and send the authorization token to the redirected domain.

    Published:Jun 22, 2023
    Last Modified:Dec 5, 2024
    EPS:Jun 22, 2023
    EPSS Score:0.00111
    CVSS Score:8.2

    Affected Products

    Vendor
    Zscaler
    Product
    Client Connector

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-178 Cross-Site Flashing

    Related CVEs

    CVE-2026-59568 (CVSS 9.1) — Multiple vulnerabilities on affected versions of Zscaler Client Connector allow remote code execution, giving …
    CVE-2026-59567 (CVSS 8.8) — Multiple vulnerabilities on affected versions of Zscaler Client Connector allow local privilege escalation, gi…
    CVE-2026-59566 (CVSS 8.4) — A locally exploitable buffer overflow bug can cause a local denial-of-service attack on affected versions of Z…
    CVE-2026-59565 (CVSS 8.8) — A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service attack on affected v…
    CVE-2026-59564 (CVSS 9.1) — An authentication bypass issue exists in communications between affected versions of the Zscaler Client Connec…
    CVE-2026-22569 (CVSS 5.4) — An incorrect startup configuration of affected versions of Zscaler Client Connector on Windows may cause a lim…
    CVE-2025-54983 (CVSS 5.2) — A health check port on Zscaler Client Connector on Windows, versions 4.6 < 4.6.0.216 and 4.7 < 4.7.0.47, whic…
    CVE-2024-31127 (CVSS 7.3) — An improper verification of a loaded library in Zscaler Client Connector on Mac < 4.2.0.241 may allow a local …
    CVE-2023-28806 (CVSS 5.7) — An Improper Validation of signature in Zscaler Client Connector on Windows allows an authenticated user to dis…
    CVE-2024-23483 (CVSS 7) — An Improper Input Validation vulnerability in Zscaler Client Connector on MacOS allows OS Command Injection. T…

    References

    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=Linux&applicable_version=1.4&deployment_date=2022-10-31&id=1420246
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=Android&applicable_version=1.10.2&deployment_date=2023-03-09&id=1447706
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=Chrome%20OS&applicable_version=1.10.1&deployment_date=2023-03-10&id=1447771
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=iOS&applicable_version=1.9.3&deployment_date=2023-03-03&id=1447071
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=macOS&applicable_version=3.9&deployment_date=2023-01-25&id=1443546
    https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2021?applicable_category=Windows&applicable_version=3.7&deployment_date=2021-11-26&id=1386541
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=Linux&applicable_version=1.4&deployment_date=2022-10-31&id=1420246
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=Android&applicable_version=1.10.2&deployment_date=2023-03-09&id=1447706
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=Chrome%20OS&applicable_version=1.10.1&deployment_date=2023-03-10&id=1447771
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=iOS&applicable_version=1.9.3&deployment_date=2023-03-03&id=1447071
    https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=macOS&applicable_version=3.9&deployment_date=2023-01-25&id=1443546
    https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2021?applicable_category=Windows&applicable_version=3.7&deployment_date=2021-11-26&id=1386541

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High