{"answers":{"affected":"4 open source packages ship an affected version, including zebra-rpc and zebrad.","exploited":"There is no known exploitation of CVE-2026-52731 in the wild and no public exploit code.","fix":"Upgrade zebra-rpc to 8.0.0 or later.","what":"CVE-2026-52731 is a medium-severity denial of service vulnerability in ZcashFoundation zebra, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-52731 and fix it if it is affected.\n\nWhat it is: CVE-2026-52731 is a medium-severity denial of service vulnerability in ZcashFoundation zebra, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-52731 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zebra-rpc (crates.io): affected all versions; fixed in 8.0.0\n- zebra-rpc (crates.io): affected all versions; fixed in 8.0.0\n- zebrad (crates.io): affected all versions; fixed in 4.5.0\n- zebrad (crates.io): affected all versions; fixed in 4.5.0\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-2026-52731/ (Markdown: https://insights.sbomify.com/CVE-2026-52731/index.md)","id":"CVE-2026-52731","markdown":"https://insights.sbomify.com/CVE-2026-52731/index.md","name":"CVE-2026-52731","record":{"aliases":["GHSA-qv2r-v3mx-f4pf"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Zcash node software","requires_auth":"low_privilege","summary":"An authenticated attacker can crash the Zebra Zcash node by sending a malformed RPC request with multi-byte characters in the LongPollId.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"}],"description":"ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an attacker authenticated to an enabled Zebra RPC endpoint can terminate zebrad by supplying a getblocktemplate LongPollId containing multi-byte UTF-8 characters. In zebra-rpc/src/methods/types/long_poll.rs, LongPollId::from_str originally checked the input byte length and then sliced fixed byte ranges to parse encoded fields. A slice boundary can land inside a multi-byte character and trigger Rust's byte index is not a char boundary panic. Zebra release builds use panic equals abort, so one malformed authenticated RPC request terminates the entire node process and can be repeated after restart. This issue is fixed in version 4.5.0.","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":"ZEBRA: Full node denial of service via non-ASCII LongPollId in getblocktemplate","id":"CVE-2026-52731","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"ZEBRA: Mempool transaction admission denial via single-peer inbound queue saturation","id":"CVE-2026-52732"},"packages":[{"ecosystem":"crates.io","fixed":["8.0.0"],"introduced":["0"],"last_affected":[],"package":"zebra-rpc","purl":null,"source":"GHSA-qv2r-v3mx-f4pf"},{"ecosystem":"crates.io","fixed":["8.0.0"],"introduced":["0"],"last_affected":[],"package":"zebra-rpc","purl":"pkg:cargo/zebra-rpc","source":"GHSA-qv2r-v3mx-f4pf"},{"ecosystem":"crates.io","fixed":["4.5.0"],"introduced":["0"],"last_affected":[],"package":"zebrad","purl":null,"source":"GHSA-qv2r-v3mx-f4pf"},{"ecosystem":"crates.io","fixed":["4.5.0"],"introduced":["0"],"last_affected":[],"package":"zebrad","purl":"pkg:cargo/zebrad","source":"GHSA-qv2r-v3mx-f4pf"}],"prev":{"headline":"Xibo CMS Missing Authorization in Module::settingsForm due to PHP operator precedence","id":"CVE-2026-52730"},"products":["zebra","zebra-rpc"],"published":"2026-08-18","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-18","vendors":["ZcashFoundation"]},"summary":"An authenticated attacker can crash the Zebra Zcash node by sending a malformed RPC request with multi-byte characters in the LongPollId.","url":"https://insights.sbomify.com/CVE-2026-52731/"}