How severe is CVE-2026-30523?

CVE-2026-30523 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-30523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30523?

CVE-2026-30523 affects Oretnom23 Loan Management System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30523?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-30523 have an EU (EUVD) identifier?

Yes. CVE-2026-30523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17897.

When was CVE-2026-30523 published?

CVE-2026-30523 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-30523

CVE-2026-30523 is a medium-severity vulnerability in Oretnom23 Loan Management System with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17897
Weakness: CWE-20
Affected product: Oretnom23 Loan Management System
Published: 2026-04-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-30523?: 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.
How severe is CVE-2026-30523?: CVE-2026-30523 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-30523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30523?: CVE-2026-30523 affects Oretnom23 Loan Management System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30523 have an EU (EUVD) identifier?: Yes. CVE-2026-30523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17897.
When was CVE-2026-30523 published?: CVE-2026-30523 was published on 2026-04-01 and last updated on 2026-06-17.

References

https://github.com/meifukun/Web-Security-PoCs/blob/main/Loan-Management-System/BusinessLogic-LoanPlan-NegativeMonths.md

Affected products (1)

cpe:2.3:a:oretnom23:loan_management_system:1.0:*:*:*:*:*:*:*

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