CVE-2023-28799

What it is

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.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2023-03-23 18:29 UTC ReservedThe CVE id was reserved by its CNA
2. 2023-06-22 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-17 05:48 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 8.2 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2023-06-22 20:15 UTC

Last modified

2026-06-17 05:48 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-1287

Record status

Modified

Affected

• Zscaler Client Connector < 1.4
• Zscaler Client Connector < 1.9.3
• Zscaler Client Connector < 1.10.1
• Zscaler Client Connector < 1.10.2
• Zscaler Client Connector < 3.7
• Zscaler Client Connector < 3.9

Attack profile CVSS 3.1 · 8.2

Attack vector

Network

Complexity

High

Privileges needed

Low

User interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-28799.md and follow it. Check whether this project is affected by CVE-2023-28799. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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