CVE-2023-0588Public exploitNetwork attack vector

Administrator-context script execution via reflected POST values

Published Jun 27, 2023 · Updated Nov 27, 2024

Reflected XSS in Catalyst Connect Zoho CRM Client Portal before 2.1.0 allows remote attackers to run script in an administrator's browser. The usersmanagement admin page inserts unsanitized username and password POST values into HTML when company information is configured. A logged-in administrator must load an attacker-controlled page that submits the form, after which the script runs with the portal site's privileges.

CVSS severity6.1
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Catalyst Connect Zoho CRM Client Portal before 2.1.0 allows remote attackers to run script in an administrator's browser. The usersmanagement admin page inserts unsanitized username and password POST values into HTML when company information is configured. A logged-in administrator must load an attacker-controlled page that submits the form, after which the script runs with the portal site's privileges.

The record

CVE
CVE-2023-0588
Published
Jun 27, 2023
Updated
Nov 27, 2024
Vendor
Catalyst Connect
Product
Catalyst Connect Zoho CRM Client Portal
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Catalyst Connect · Catalyst Connect Zoho CRM Client Portalversion=0 <2.1.0

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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