{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-109365 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-109365 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-109365 is a medium-severity denial of service vulnerability in ZcashFoundation zebra, published on 12 Oct 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-2026-109365 and fix it if it is affected.\n\nWhat it is: CVE-2026-109365 is a medium-severity denial of service vulnerability in ZcashFoundation zebra, published on 12 Oct 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-2026-109365 in the wild and no public exploit code.\n\nAffected product: ZcashFoundation zebra. 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-2026-109365/ (Markdown: https://insights.sbomify.com/CVE-2026-109365/index.md)","id":"CVE-2026-109365","markdown":"https://insights.sbomify.com/CVE-2026-109365/index.md","name":"CVE-2026-109365","record":{"aliases":["GHSA-3c94-hf7p-g5mf","GHSA-q5ww-8rv8-j2cv"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Zcash node software","requires_auth":"none","summary":"Unauthenticated attackers can cause denial of service in Zebra nodes by serving forged block bodies that trigger expensive proof verification.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"description":"Zebra before 6.4.0 contains an uncontrolled resource consumption vulnerability that allows unauthenticated peers to force full proof verification by serving forged block bodies with valid header hashes. Attackers can flip authorizing-only bytes such as a coinbase scriptSig, wasting Sapling, Orchard, and Ironwood proof verification without penalty and stalling sync for 67 seconds.","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":"Zebra before 6.4.0 Denial of Service via Same-Hash Forged Block Bodies","id":"CVE-2026-109365","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Zebra before 6.4.0 Gossiped Block Drop via Forged Coinbase scriptSig Height","id":"CVE-2026-109366"},"packages":[],"prev":{"headline":"Zebra 2.3.0 before 6.4.0 Peer Ban Bypass via Exact-IP Keying","id":"CVE-2026-109364"},"products":["zebra"],"published":"2026-10-12","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":"2026-10-13","vendors":["ZcashFoundation"]},"summary":"Unauthenticated attackers can cause denial of service in Zebra nodes by serving forged block bodies that trigger expensive proof verification.","url":"https://insights.sbomify.com/CVE-2026-109365/"}