CVE-2026-1423Public exploitNetwork attack vector

Authenticated code execution via unrestricted logo upload

Published Jan 26, 2026 · Updated Jan 26, 2026

Unrestricted file upload in Code Projects Online Examination System 1.0 allows remote authenticated users to execute server-side PHP code. The Change Picture handler in /onexam/admin_pic.php accepts a replacement logo without restricting file types, permitting upload and invocation of a PHP web shell. Authenticated access to that administrative feature is required, and resulting commands run with the web server process permissions.

CVSS severity6.3
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Unrestricted file upload in Code Projects Online Examination System 1.0 allows remote authenticated users to execute server-side PHP code. The Change Picture handler in /onexam/admin_pic.php accepts a replacement logo without restricting file types, permitting upload and invocation of a PHP web shell. Authenticated access to that administrative feature is required, and resulting commands run with the web server process permissions.

The record

CVE
CVE-2026-1423
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
Tutorials Website
Product
Online Examination System
Classifications
CWE-284, CWE-434, T1505.003, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 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 privilegesauthenticated

What is affected?

Tutorials Website · Online Examination Systemversion=1.0

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell
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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