MEDIUM 6.3 NVD
CVE-2026-104436
Zebra before 4.5.0 contains an uncontrolled resource consumption vulnerability that allows remote P2P peers to exhaust blocking-pool threads by sending oversize
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.
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-get
This medium severity vulnerability with a CVSS score of 6.3 was published on 2026-10-02 via NVD.
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