Most recent entries from all https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 10:23:48 +0000 CVE-2026-104436 — Zebra before 4.5.0 CPU Amplification via Uncapped getblocks/getheaders Locator Length https://vulnerability.circl.lu/vuln/cve-2026-104436 <p><strong>Affected:</strong> ZcashFoundation zebra</p> <p>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.</p> <p><strong>Affected:</strong> ZcashFoundation zebra</p> <p>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.</p> https://vulnerability.circl.lu/vuln/cve-2026-104436