{"id":"EUVD-2026-91446","revision":"c380ae69945f459194668523ea30c6c6","records":[{"revision":"c380ae69945f459194668523ea30c6c6","observedAt":"2026-11-03T02:58:35.354+00:00","statement":{"source":"euvd","id":"EUVD-2026-91446","aliases":["CVE-2026-104436","GHSA-4m38-rccq-j8gv"],"title":"Zebra before 4.5.0 contains an uncontrolled resource consumption vulnerability that allows remote P2P peers to exhaust blocking-pool threads by sending oversized block locator vectors. Attackers can send getblocks or getheaders messages wit…","description":"Zebra before 4.5.0 contains an uncontrolled resource consumption vulnerability that allows remote P2P peers to exhaust blocking-pool threads by sending oversized block locator vectors. Attackers can send getblocks or getheaders messages with up to 65,535 locator hashes, triggering per-hash chain lookups that degrade block validation, RPC, and mempool performance.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.3,"severity":null}],"references":["https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-443g-gwgp-49x4","https://www.vulncheck.com/advisories/zebra-before-4.5.0-cpu-amplification-via-uncapped-getblocks-getheaders-locator-length"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-91446","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 2, 2026, 11:38:13 AM","dateUpdated":"Oct 29, 2026, 9:15:28 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-91446","identifiers":["EUVD-2026-91446","CVE-2026-104436","GHSA-4m38-rccq-j8gv"]},"retained":false,"historicalAffected":[]}],"coverage":[]}