CVE-2023-6429Network attack vector

Browser script execution via unencoded FirstRecord parameter

Published Nov 30, 2023 · Updated Aug 2, 2024

Stored XSS in clients_view.php in BigProf Software Online Invoicing System 2.6 allows attackers to run JavaScript via a crafted FirstRecord value. The page stores the FirstRecord value without sufficient output encoding and renders it as executable script when the page loads. The CNA assessment requires no attacker privileges, but another user must load the affected clients page; execution remains within that browser context.

CVSS severity6.3
Medium
EPSS probability0.39%
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 clients_view.php in BigProf Software Online Invoicing System 2.6 allows attackers to run JavaScript via a crafted FirstRecord value. The page stores the FirstRecord value without sufficient output encoding and renders it as executable script when the page loads. The CNA assessment requires no attacker privileges, but another user must load the affected clients page; execution remains within that browser context.

The record

CVE
CVE-2023-6429
Published
Nov 30, 2023
Updated
Aug 2, 2024
Vendor
BigProf Software
Product
Online Invoicing System
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BigProf Software · Online Invoicing Systemversion=2.6

Published CVSS scores

5.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.3Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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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