Threats Tagged 'ghsa-443g-gwgp-49x4'
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Threats Tagged 'ghsa-443g-gwgp-49x4'
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GHSA-443g-gwgp-49x4: zebrad vulnerable to getblocks/getheaders locator CPU amplification via uncapped vector length 0 A vulnerability in zebrad up to version 4.4.1 allows oversized getblocks and getheaders locator vectors, up to approximately 65,535 entries instead of the protocol limit of 101. This causes excessive CPU usage by occupying blocking-pool threads during chain lookup operations. Exploitation requires significant attacker bandwidth and multiple Sybil peers, limiting real-world impact. The issue is patched in zebrad 4.4.2 by enforcing the correct locator size limit. No specific workaround is needed as existing backpressure mechanisms mitigate the impact. Join the discussion | GCVE Database | 07/02/2026, 19:34:21 UTC Added: 07/02/2026, 22:56:55 UTC |
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