{"answers":{"affected":"2 open source packages ship an affected version, including nimiq-blockchain.","exploited":"There is no known exploitation of CVE-2026-46543 in the wild and no public exploit code.","fix":"Upgrade nimiq-blockchain to 1.5.0 or later.","what":"CVE-2026-46543 is a medium-severity vulnerability in nimiq core-rs-albatross, published on 9 Jun 2026."},"fix_prompt":"Check this codebase for CVE-2026-46543 and fix it if it is affected.\n\nWhat it is: CVE-2026-46543 is a medium-severity vulnerability in nimiq core-rs-albatross, published on 9 Jun 2026. \nExploitation: There is no known exploitation of CVE-2026-46543 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nimiq-blockchain (crates.io): affected all versions; fixed in 1.5.0\n- nimiq-blockchain (crates.io): affected all versions; fixed in 1.5.0\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-2026-46543/ (Markdown: https://insights.sbomify.com/CVE-2026-46543/index.md)","id":"CVE-2026-46543","markdown":"https://insights.sbomify.com/CVE-2026-46543/index.md","name":"CVE-2026-46543","record":{"aliases":["GHSA-vghx-352f-93jm"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"description":"Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with \"No macro blocks before genesis block\". This issue has been patched in version 1.5.0.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"nimiq-blockchain: Genesis batch set request","id":"CVE-2026-46543","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":null,"year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Information disclosure in UFO","id":"CVE-2026-46544"},"packages":[{"ecosystem":"crates.io","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"nimiq-blockchain","purl":null,"source":"GHSA-vghx-352f-93jm"},{"ecosystem":"crates.io","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"nimiq-blockchain","purl":"pkg:cargo/nimiq-blockchain","source":"GHSA-vghx-352f-93jm"}],"prev":{"headline":"nimiq-keys: Denial of service in Ed25519 multisig delinearization via invalid curve points","id":"CVE-2026-46542"},"products":["core-rs-albatross"],"published":"2026-06-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-10","vendors":["nimiq"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-46543/"}