CVE-2021-24794Public exploitNetwork attack vector

Stored XSS via unescaped Address fields

Published Nov 1, 2021 · Updated Aug 3, 2024

Stored XSS in Connections Business Directory before 10.4.3 allows remote authenticated users to run script via crafted Address fields. The entry-creation path stores unescaped Address field values and renders them on the Manage admin page without output escaping. A high-privilege WordPress account is required, and execution occurs when another user opens Manage; the injected script can act in that user's browser.

CVSS severity4.8
Medium
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Connections Business Directory before 10.4.3 allows remote authenticated users to run script via crafted Address fields. The entry-creation path stores unescaped Address field values and renders them on the Manage admin page without output escaping. A high-privilege WordPress account is required, and execution occurs when another user opens Manage; the injected script can act in that user's browser.

The record

CVE
CVE-2021-24794
Published
Nov 1, 2021
Updated
Aug 3, 2024
Vendor
Steven A. Zahm
Product
Connections Business Directory
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=10.4.3 <10.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Steven A. Zahm · Connections Business Directoryversion=10.4.3 <10.4.3

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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