{"answers":{"affected":"2 open source packages ship an affected version, including zebrad. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-44498 in the wild and no public exploit code.","fix":"Upgrade zebrad to 4.4.0 or later.","what":"CVE-2026-44498 is a critical vulnerability in ZcashFoundation zebra, published on 8 May 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-2026-44498 and fix it if it is affected.\n\nWhat it is: CVE-2026-44498 is a critical vulnerability in ZcashFoundation zebra, published on 8 May 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-2026-44498 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zebrad (crates.io): affected all versions; fixed in 4.4.0\n- zebrad (crates.io): affected all versions; fixed in 4.4.0\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-2026-44498/ (Markdown: https://insights.sbomify.com/CVE-2026-44498/index.md)","id":"CVE-2026-44498","markdown":"https://insights.sbomify.com/CVE-2026-44498/index.md","name":"CVE-2026-44498","record":{"aliases":["GHSA-jv4h-j224-23cc"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Zcash node software","requires_auth":"none","summary":"Zebra node accepts invalid blocks due to sigop undercounting, causing network splits and potential denial of service for Zcash users.","user_interaction":"not_required","vuln_class":"business_logic"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"zebrad","vendor":"zfnd"}],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","version":"4.0"},"cwes":[{"id":"CWE-682","name":"Incorrect Calculation"}],"description":"ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, Zebra's block validator undercounts transparent signature operations against the 20000-sigop block limit (MAX_BLOCK_SIGOPS), allowing it to accept blocks that zcashd rejects with bad-blk-sigops. A miner who produces such a block can split the network: Zebra nodes follow the offending chain while zcashd nodes do not. This issue has been patched in version 4.4.0.","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":"ZEBRA: Block Validator Undercounts Coinbase and P2SH Sigops","id":"CVE-2026-44498","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"business_logic","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"ZEBRA: Permanent Block Discovery Halt via Gossip Queue Saturation and Syncer Poisoning","id":"CVE-2026-44499"},"packages":[{"ecosystem":"crates.io","fixed":["4.4.0"],"introduced":["0"],"last_affected":[],"package":"zebrad","purl":null,"source":"GHSA-jv4h-j224-23cc"},{"ecosystem":"crates.io","fixed":["4.4.0"],"introduced":["0"],"last_affected":[],"package":"zebrad","purl":"pkg:cargo/zebrad","source":"GHSA-jv4h-j224-23cc"}],"prev":{"headline":"ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling due to Stale Buffer","id":"CVE-2026-44497"},"products":["zebra"],"published":"2026-05-08","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":"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-14","vendors":["ZcashFoundation"]},"summary":"Zebra node accepts invalid blocks due to sigop undercounting, causing network splits and potential denial of service for Zcash users.","url":"https://insights.sbomify.com/CVE-2026-44498/"}