CVE-2026-5330Public exploitNetwork attack vector

Unauthenticated user deletion via unchecked delete action

Published Apr 2, 2026 · Updated Apr 2, 2026

Missing authorization in Best Courier Management System 1.0 allows remote attackers to delete arbitrary user accounts via HTTP requests. The ajax.php delete_user action invokes backend deletion for a caller-supplied id without checking a session or administrative role. No authentication is required, and deletion permanently removes the selected database record, including an administrator account.

CVSS severity6.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Best Courier Management System 1.0 allows remote attackers to delete arbitrary user accounts via HTTP requests. The ajax.php delete_user action invokes backend deletion for a caller-supplied id without checking a session or administrative role. No authentication is required, and deletion permanently removes the selected database record, including an administrator account.

The record

CVE
CVE-2026-5330
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
Mayuri K
Product
Best Courier Management System
Classifications
CWE-284, CWE-266, T1531
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 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?

Mayuri K · Best Courier Management Systemversion=1.0
Online Computer and Laptop Store Project · Best Courier Management Systemversion=1.0

Published CVSS scores

6.5VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.4VulDBAV:N/AC:L/Au:N/C:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-266Incorrect Privilege Assignment
T1531Account Access Removal

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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