{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-123558", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-06T00:50:45.483Z", "datePublished": "2026-11-08T01:37:59.650Z", "dateUpdated": "2026-11-08T01:37:59.650Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-08T01:37:59.650Z" }, "datePublic": "2026-10-22T00:00:00.000Z", "title": "Zebra before 7.0.0 Checkpoint Sync Denial of Service via Cancelled Verifier Rewind", "descriptions": [ { "lang": "en", "value": "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." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Improper Cleanup on Thrown Exception", "cweId": "CWE-460", "type": "CWE" } ] } ], "affected": [ { "vendor": "ZcashFoundation", "product": "zebra", "defaultStatus": "unaffected", "packageURL": "pkg:cargo/zebrad", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "7.0.0" }, { "version": "7.0.0", "status": "unaffected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:zfnd:zebra:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.0.0" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH" } } ], "references": [ { "url": "https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-2w9f-9wx8-f5c8", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-2w9f-9wx8-f5c8)" }, { "name": "VulnCheck Advisory: Zebra before 7.0.0 Checkpoint Sync Denial of Service via Cancelled Verifier Rewind", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/zebra-before-7.0.0-checkpoint-sync-denial-of-service-via-cancelled-verifier-rewind" } ], "credits": [ { "lang": "en", "value": "SphereDonout", "type": "reporter" }, { "lang": "en", "value": "mpguerra", "type": "coordinator" }, { "lang": "en", "value": "conradoplg", "type": "remediation reviewer" }, { "lang": "en", "value": "oxarbitrage", "type": "remediation reviewer" } ], "x_generator": { "engine": "vulncheck-endgame" } } } }