CVE-2023-28800

CVE-2023-28800 is a high-severity vulnerability in Zscaler Client Connector with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Description

When using local accounts for administration, the redirect url parameter was not encoded correctly, allowing for an XSS attack providing admin login.

Frequently asked questions

What is CVE-2023-28800?
When using local accounts for administration, the redirect url parameter was not encoded correctly, allowing for an XSS attack providing admin login.
How severe is CVE-2023-28800?
CVE-2023-28800 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-28800 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28800?
CVE-2023-28800 primarily affects Zscaler Client Connector. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-28800?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-28800 published?
CVE-2023-28800 was published on 2023-06-22 and last updated on 2026-06-17.

References

Affected products (6)

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