{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-123555 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-123555 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-123555 is a high-severity vulnerability in ZcashFoundation zebra, published on 8 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123555 and fix it if it is affected.\n\nWhat it is: CVE-2026-123555 is a high-severity vulnerability in ZcashFoundation zebra, published on 8 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-123555 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-2026-123555/ (Markdown: https://insights.sbomify.com/CVE-2026-123555/index.md)","id":"CVE-2026-123555","markdown":"https://insights.sbomify.com/CVE-2026-123555/index.md","name":"CVE-2026-123555","record":{"aliases":["GHSA-cwcw-qfgm-5r6m","GHSA-jq45-ghw5-v37x"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-755","name":"Improper Handling of Exceptional Conditions"}],"description":"Zebra from 2.3.0 before 7.0.0 contains a denial of service vulnerability that allows unauthenticated peers to evade misbehavior scoring by sending transactions or blocks with invalid transparent scripts. Attackers can flood mempool with script-failing transactions or serve forged v5 block bodies with altered scriptSig bytes to exhaust CPU and repeatedly stall block sync.","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 2.3.0 before 7.0.0 Denial of Service via Unscored Script Verification Failures","id":"CVE-2026-123555","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Zebra 4.5.0 before 7.0.0 Honest Peer Ban via Mempool Lock-Time Scoring","id":"CVE-2026-123556"},"nickname":null,"packages":[],"prev":{"headline":"Zebra zebrad 6.4.0 before 7.0.0 Denial of Service via Mempool Coinbase-Maturity Check","id":"CVE-2026-123554"},"products":["zebra"],"published":"2026-11-08","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-08","vendors":["ZcashFoundation"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123555/"}