6.5

CVE-2026-30523: oretnom23 loan_management_system Improper Input Validation

CVSS: 6.5v3.1MediumAnalyzed
Published 01-04-2026Last modified 01-04-2026
Open JSON

Vulnerability summary

CVE-2026-30523 is a medium (CVSS 6.5) Improper Input Validation vulnerability in oretnom23 loan_management_system. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.48%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 01-04-2026
    PublishedVulnerability first disclosed.
  2. 01-04-2026
    Last modifiedVulnerability information updated.

Description

A Business Logic vulnerability exists in SourceCodester Loan Management System v1.0 due to the lack of proper input validation. The application allows administrators to define "Loan Plans" which determine the duration of a loan (in months). However, the backend fails to validate that the duration must be a positive integer. An attacker can submit a negative value for the months parameter. The system accepts this invalid data and creates a loan plan with a negative duration.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

+0.18 pp

From 0.30% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.48%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Web Security Pocs

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Oretnom231 product

1 vendor · 1 product

References

1 links