HIGH 8.7 NVD
CVE-2026-123558
Zebra zebrad before 7.0.0 contains a denial of service vulnerability that allows a malicious peer to stall checkpoint sync by cancelling the verifier rewind aft
Zebra zebrad before 7.0.0 contains a denial of service vulnerability that allows a malicious peer to stall checkpoint sync by cancelling the verifier rewind after a failed commit. Attackers can serve a forged block with altered authorizing data plus a restart-triggering block, leaving the verifier rejecting honest blocks until restart.
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-2w9f-9wx8-f5c8
- https://www.vulncheck.com/advisories/zebra-before-7.0.0-checkpoint-sync-denial-of-service-
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-11-08 via NVD.
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