CVE-2023-49977Public exploitNetwork attack vector

Stored script execution via unsanitized customer address

Published Mar 6, 2024 · Updated Aug 20, 2024

Stored cross-site scripting in SourceCodester Customer Support System 1.0 allows remote authenticated users to run scripts through customer addresses. The new-customer and customer-edit flows store the address field without neutralizing HTML, and customer_list renders it so embedded JavaScript executes in a visitor's browser. Administrative access is required to create or edit customer records, and execution occurs when the customer list is viewed, exposing that viewer's session and page data to attacker-controlled script actions.

CVSS severity5.4
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in SourceCodester Customer Support System 1.0 allows remote authenticated users to run scripts through customer addresses. The new-customer and customer-edit flows store the address field without neutralizing HTML, and customer_list renders it so embedded JavaScript executes in a visitor's browser. Administrative access is required to create or edit customer records, and execution occurs when the customer list is viewed, exposing that viewer's session and page data to attacker-controlled script actions.

The record

CVE
CVE-2023-49977
Published
Mar 6, 2024
Updated
Aug 20, 2024
Vendor
Online Computer and Laptop Store Project
Product
Customer Support System
Classifications
CWE-79, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Online Computer and Laptop Store Project · Customer Support Systemversion=1.0

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

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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