CVE Explorer

CVE-2026-30521

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 interest rates. While the frontend interface prevents users from entering negative numbers, 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 interest_percentage. Th

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8309c76d2ee80c4e4e1d2e499bb88b52e79a33702591a944f554bd05897a5c24

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-602","description":"CWE-602 Client-Side Enforcement of Server-Side Security","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:62a0dbaa26120f53073e55fbdbb36ce1223b6279e0928d3fb10dc7cd7f3fae58 · sha256:797941645c3ead3d… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"n/a","lang":"en","type":"text"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:62a0dbaa26120f53073e55fbdbb36ce1223b6279e0928d3fb10dc7cd7f3fae58 · sha256:797941645c3ead3d… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion

{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:62a0dbaa26120f53073e55fbdbb36ce1223b6279e0928d3fb10dc7cd7f3fae58 · sha256:797941645c3ead3d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:62a0dbaa26120f53073e55fbdbb36ce1223b6279e0928d3fb10dc7cd7f3fae58 · sha256:797941645c3ead3d… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-602","description":"CWE-602 Client-Side Enforcement of Server-Side Security","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:62a0dbaa26120f53073e55fbdbb36ce1223b6279e0928d3fb10dc7cd7f3fae58 · sha256:797941645c3ead3d… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"n/a","lang":"en","type":"text"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:62a0dbaa26120f53073e55fbdbb36ce1223b6279e0928d3fb10dc7cd7f3fae58 · sha256:797941645c3ead3d… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"url":"https://github.com/meifukun/Web-Security-PoCs/blob/main/Loan-Management-System/BusinessLogic-LoanPlan-NegativeInterest.md"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:62a0dbaa26120f53073e55fbdbb36ce1223b6279e0928d3fb10dc7cd7f3fae58 · sha256:797941645c3ead3d… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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