high · CVSS v3 7.5 · CVSS v4 8.7

CVE-2026-123559

Zebra before 7.0.0 contains an inefficient algorithmic complexity vulnerability that allows unauthenticated peers to exh…

Description

Zebra before 7.0.0 contains an inefficient algorithmic complexity vulnerability that allows unauthenticated peers to exhaust verification threads by submitting transactions with many transparent inputs. Attackers can relay invalid transactions with tens of thousands of inputs, forcing quadratic ZIP-244 or ZIP-243 digest recomputation that stalls Rayon-backed block verification for minutes.

Scores

Severity
high
CVSS v2
7.8
CVSS v3
7.5
CVSS v4
8.7
EPSS
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