How severe is CVE-2026-30522?

CVE-2026-30522 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-30522 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30522?

CVE-2026-30522 affects Oretnom23 Loan Management System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30522?

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

Does CVE-2026-30522 have an EU (EUVD) identifier?

Yes. CVE-2026-30522 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17895.

When was CVE-2026-30522 published?

CVE-2026-30522 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-30522

CVE-2026-30522 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-602.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17895
Weakness: CWE-602
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 improper server-side validation. The application allows administrators to create "Loan Plans" with specific penalty rates for overdue payments. While the frontend interface prevents users from entering negative numbers in the "Monthly Overdue Penalty" field, this constraint is not enforced on the backend. An authenticated attacker can bypass the client-side restriction by manipulating the HTTP POST request to submit a negative value for the penalty_rate.

Frequently asked questions

What is CVE-2026-30522?: A Business Logic vulnerability exists in SourceCodester Loan Management System v1.0 due to improper server-side validation. The application allows administrators to create "Loan Plans" with specific penalty rates for overdue payments. While the frontend interface prevents users from entering negative numbers in the "Monthly Overdue Penalty" field, this constraint is not enforced on the backend. An authenticated attacker can bypass the client-side restriction by manipulating the HTTP POST request to submit a negative value for the penalty_rate.
How severe is CVE-2026-30522?: CVE-2026-30522 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-30522 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30522?: CVE-2026-30522 affects Oretnom23 Loan Management System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30522?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30522 have an EU (EUVD) identifier?: Yes. CVE-2026-30522 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17895.
When was CVE-2026-30522 published?: CVE-2026-30522 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-NegativePenalty.md

Affected products (1)

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

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