CVE-2026-15539Public exploitNetwork attack vector

Authenticated code execution via unrestricted image upload

Published Jul 13, 2026 · Updated Jul 13, 2026

Unrestricted file upload in SourceCodester Online Book Store System 1.0 allows remote authenticated users to execute PHP code. The book-image upload handler accepts dangerous file types, but the public record does not identify the input field, validation logic, or storage path. Administrative access is required; successful upload permits PHP execution with web-server privileges.

CVSS severityUnavailable
Unscored
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 SourceCodester Online Book Store System 1.0 allows remote authenticated users to execute PHP code. The book-image upload handler accepts dangerous file types, but the public record does not identify the input field, validation logic, or storage path. Administrative access is required; successful upload permits PHP execution with web-server privileges.

The record

CVE
CVE-2026-15539
Published
Jul 13, 2026
Updated
Jul 13, 2026
Vendor
Online Computer and Laptop Store Project
Product
Online Book Store System
Classifications
CWE-284, CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 13, 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 privilegesadmin

What is affected?

Online Computer and Laptop Store Project · Online Book Store Systemversion=1.0

Published CVSS scores

5.8VulDB CNAAV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
5.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
4.7VulDB CNACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
4.7VulDB CNACVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

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

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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