{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-123554 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-123554 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-123554 is a high-severity vulnerability in ZcashFoundation zebra, published on 8 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123554 and fix it if it is affected.\n\nWhat it is: CVE-2026-123554 is a high-severity vulnerability in ZcashFoundation zebra, published on 8 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-123554 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-2026-123554/ (Markdown: https://insights.sbomify.com/CVE-2026-123554/index.md)","id":"CVE-2026-123554","markdown":"https://insights.sbomify.com/CVE-2026-123554/index.md","name":"CVE-2026-123554","record":{"aliases":["GHSA-5872-wrc4-qh77","GHSA-7jp4-mq53-4cvq"],"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-407","name":"Inefficient Algorithmic Complexity"}],"description":"Zebra zebrad 6.4.0 before 7.0.0 performs quadratic work in the mempool coinbase-maturity check because Transaction::coinbase_spend_restriction() rebuilds the transaction's output list once per spent outpoint. Any connected peer can repeatedly send unsigned transactions with many transparent inputs and outputs, which are rejected without a misbehavior score, to pin verification threads.","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 zebrad 6.4.0 before 7.0.0 Denial of Service via Mempool Coinbase-Maturity Check","id":"CVE-2026-123554","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 2.3.0 before 7.0.0 Denial of Service via Unscored Script Verification Failures","id":"CVE-2026-123555"},"nickname":null,"packages":[],"prev":{"headline":"OpenAM before 16.1.4 Default Credentials in Built-in Accounts Allow Unauthenticated Login","id":"CVE-2026-123553"},"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-11-09","vendors":["ZcashFoundation"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123554/"}