Quick answers
- Is CVE-2026-30521 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-30521 being exploited in the wild.
- How severe is CVE-2026-30521?
- Medium severity, with a CVSS score of 6.5, published 31 March 2026.
- Which products and versions are affected?
- SourceCodester Loan Management System 1.0.
- Is there a fix for CVE-2026-30521?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-30521 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-30521?
- Check whether you run Oretnom23 Loan Management System. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A business logic vulnerability exists in the Plan Management component (specifically ajax.php?action=save_plan) of SourceCodester Loan Management System v1.0. While the frontend UI uses HTML5 or JavaScript constraints to prevent negative values in the 'interest_percentage' field, the backend fails to validate that the submitted value is non-negative. An authenticated attacker can intercept and modify the HTTP POST request (e.g., using Burp Suite or curl) to inject a negative interest rate. This results in the storage of invalid financial parameters in the database, which can break downstream interest calculations and financial reporting. No patch is currently documented in the advisory.
Affected products
- SourceCodester Loan Management System 1.0
Timeline
- 2026-03-31: disclosed: Initial disclosure of CVE-2026-30521
- 2026-03-31: advisory: NVD publication date