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CVE-2026-123558 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-2w9f-9wx8-f5c8	[email protected]	AdvisoryVendor
https://www.vulncheck.com/advisories/zebra-before-7.0.0-checkpoint-sync-denial-of-service-via-cancelled-verifier-rewind	[email protected]	AdvisoryVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-460	Improper Cleanup on Thrown Exception	[email protected]

Affected Products

Product	Versions
ZcashFoundation Zebra	< 7.0.0 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 7.0.0moderate effort

Change History

1 change record found show changes