{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30521 exists.","fix":"No fix has been published for CVE-2026-30521 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-30521 is a medium-severity vulnerability in n/a, published on 31 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-30521 and fix it if it is affected.\n\nWhat it is: CVE-2026-30521 is a medium-severity vulnerability in n/a, published on 31 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30521 exists.\n\nAffected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-30521/ (Markdown: https://insights.sbomify.com/CVE-2026-30521/index.md)","id":"CVE-2026-30521","markdown":"https://insights.sbomify.com/CVE-2026-30521/index.md","name":"CVE-2026-30521","record":{"aliases":["GHSA-pmwx-37w8-6v99"],"analysis":{"component_type":"web_application","fix_type":"no_fix_stated","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Loan Management System","requires_auth":"low_privilege","summary":"An authenticated attacker can create loan plans with negative interest rates by bypassing client-side validation, impacting financial data integrity.","user_interaction":"not_required","vuln_class":"business_logic"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"loan_management_system","vendor":"oretnom23"}],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-602","name":"Client-Side Enforcement of Server-Side Security"}],"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 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. This results in the creation of loan plans with negative interest rates.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Business logic in n/a","id":"CVE-2026-30521","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"business_logic","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Business logic in n/a","id":"CVE-2026-30522"},"packages":[],"prev":{"headline":"SQL injection in n/a","id":"CVE-2026-30520"},"products":["n/a"],"published":"2026-03-31","related":[{"cvss_score":6.5,"headline":"Business logic in n/a","id":"CVE-2026-30522","kev_date_added":null,"published":"2026-04-01"},{"cvss_score":6.5,"headline":"Business logic in n/a","id":"CVE-2026-30523","kev_date_added":null,"published":"2026-04-01"},{"cvss_score":5.4,"headline":"SQL injection in n/a","id":"CVE-2026-30520","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":5.3,"headline":"SourceCodester Loan Management System index.php cross site scripting","id":"CVE-2026-3702","kev_date_added":null,"published":"2026-03-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-02","vendors":["n/a"]},"summary":"An authenticated attacker can create loan plans with negative interest rates by bypassing client-side validation, impacting financial data integrity.","url":"https://insights.sbomify.com/CVE-2026-30521/"}