CVE-2026-82700Public exploitNetwork attack vector

Administrator-browser script execution via unencoded subscriber email

Published Aug 31, 2026 · Updated Aug 31, 2026

Stored XSS in Code Projects Online Shopping System 1.0 allows remote attackers to execute JavaScript through the newsletter email field. The offersmail.php endpoint stores the unvalidated email parameter and later inserts it into subscriber-list HTML without output encoding. No authentication is needed to plant the payload, but execution requires an administrator or other privileged user to view the stored subscriber record; script execution is limited to that user's browser context.

CVSS severity5.3
Medium
EPSS probability0.27%
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 Code Projects Online Shopping System 1.0 allows remote attackers to execute JavaScript through the newsletter email field. The offersmail.php endpoint stores the unvalidated email parameter and later inserts it into subscriber-list HTML without output encoding. No authentication is needed to plant the payload, but execution requires an administrator or other privileged user to view the stored subscriber record; script execution is limited to that user's browser context.

The record

CVE
CVE-2026-82700
Published
Aug 31, 2026
Updated
Aug 31, 2026
Vendor
Code Projects
Product
Online Shopping System
Classifications
CWE-94, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 31, 2026Record 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 privilegesunauthenticated

What is affected?

Code Projects · Online Shopping Systemversion=1.0

Published CVSS scores

4.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
5.0VulDB CNAAV:N/AC:L/Au:N/C:N/I:P/A:N
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
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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