{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-48486 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-48486 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-48486 is a high-severity vulnerability in signum-network signum-node, published on 3 Sep 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-2026-48486 and fix it if it is affected.\n\nWhat it is: CVE-2026-48486 is a high-severity vulnerability in signum-network signum-node, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-48486 in the wild and no public exploit code.\n\nAffected product: signum-network signum-node. 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-2026-48486/ (Markdown: https://insights.sbomify.com/CVE-2026-48486/index.md)","id":"CVE-2026-48486","markdown":"https://insights.sbomify.com/CVE-2026-48486/index.md","name":"CVE-2026-48486","record":{"aliases":["GHSA-4vjp-2m22-r2q9"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Signum cryptocurrency node","requires_auth":"none","summary":"A miner can exploit an integer overflow in fee distribution to arbitrarily inflate block rewards, compromising the cryptocurrency's economic integrity.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"Signum Node is a HDD-mined cryptocurrency using an energy efficient and fair Proof-of-Commitment (PoC+) consensus algorithm. Prior to version 3.9.9, an integer overflow in BlockServiceImpl.applyBlock() allowed a miner to receive an arbitrarily inflated block reward by crafting a block with a negative totalFeeCashBackNqt value. The vulnerability was introduced when the SMART_FEES hardfork (block ~1,029,000) enabled fee cash-back and burn accounting without overflow protection. This issue has been patched in version 3.9.9.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Signum Node: Integer overflow in SMART_FEES fee distribution allows arbitrary miner reward inflation","id":"CVE-2026-48486","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Zeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet","id":"CVE-2026-48487"},"packages":[],"prev":{"headline":"Quest Bot: Stored warn reasons can still trigger bot-powered mass mentions through `/warns`.","id":"CVE-2026-48485"},"products":["signum-node"],"published":"2026-09-03","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-03","vendors":["signum-network"]},"summary":"A miner can exploit an integer overflow in fee distribution to arbitrarily inflate block rewards, compromising the cryptocurrency's economic integrity.","url":"https://insights.sbomify.com/CVE-2026-48486/"}