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        "cveId": "CVE-2026-70455",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-08-04T14:52:23.814Z",
        "datePublished": "2026-08-13T14:45:11.164Z",
        "dateUpdated": "2026-08-14T16:51:20.314Z"
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                "shortName": "VulnCheck",
                "dateUpdated": "2026-08-14T16:51:20.314Z"
            },
            "title": "rsync 3.4.2 < 3.5.0 DoS via --zt Zstandard Compression Thread Exhaustion",
            "datePublic": "2026-08-12T00:00:00.000Z",
            "problemTypes": [
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                            "lang": "en",
                            "cweId": "CWE-770",
                            "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
                            "type": "CWE"
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                {
                    "vendor": "RsyncProject",
                    "product": "rsync",
                    "repo": "https://github.com/RsyncProject/rsync",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "3.4.2",
                            "lessThanOrEqual": "3.4.4",
                            "versionType": "semver"
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                        {
                            "status": "unaffected",
                            "version": "3.5.0",
                            "versionType": "semver"
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                                    "versionEndIncluding": "3.4.4"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt short alias for --compress-threads, which bypasses the refuse options directive's string matching on long option names. Attackers can specify --zt=N with a large value to spawn an unbounded number of Zstandard worker threads on the receiver, exhausting available thread and memory resources.",
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            "references": [
                {
                    "url": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-rjvj-qgqg-cvx9",
                    "name": "GitHub Security Advisory (GHSA-rjvj-qgqg-cvx9)",
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                    "url": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0",
                    "name": "rsync 3.5.0 Release Notes",
                    "tags": [
                        "release-notes"
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                },
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                    "url": "https://www.vulncheck.com/advisories/rsync-dos-via-zt-zstandard-compression-thread-exhaustion",
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                        "subIntegrityImpact": "NONE",
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                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
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                        "baseScore": 8.7,
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