{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4931 exists.","fix":"No fix has been published for CVE-2026-4931 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-4931 is a medium-severity vulnerability in Marginal Smart Contract, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-4931 and fix it if it is affected.\n\nWhat it is: CVE-2026-4931 is a medium-severity vulnerability in Marginal Smart Contract, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4931 exists.\n\nAffected product: Marginal Smart Contract. 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-2026-4931/ (Markdown: https://insights.sbomify.com/CVE-2026-4931/index.md)","id":"CVE-2026-4931","markdown":"https://insights.sbomify.com/CVE-2026-4931/index.md","name":"CVE-2026-4931","record":{"aliases":["GHSA-x4xq-7w28-q486"],"analysis":{"component_type":"other","fix_type":"no_fix_stated","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Smart contract","requires_auth":"none","summary":"Attackers can exploit unsafe downcasting in Marginal v1 smart contracts to settle large debts for negligible cost, impacting financial integrity.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"certcc","cpe":[{"product":"v1-core","vendor":"marginal"}],"cvss":{"score":6.8,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-681","name":"Incorrect Conversion between Numeric Types"}],"description":"Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.","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":"CVE-2026-4931","id":"CVE-2026-4931","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"This Power System update is being released to address Insufficient Entropy","id":"CVE-2026-4932"},"packages":[],"prev":{"headline":"DPA Countermeasures weakening on Series 3 devices","id":"CVE-2026-4930"},"products":["Marginal Smart Contract"],"published":"2026-04-07","related":[],"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":"2026-04-08","vendors":["Marginal"]},"summary":"Attackers can exploit unsafe downcasting in Marginal v1 smart contracts to settle large debts for negligible cost, impacting financial integrity.","url":"https://insights.sbomify.com/CVE-2026-4931/"}