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    "cveMetadata": {
        "cveId": "CVE-2026-111273",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-10-15T19:33:20.652Z",
        "datePublished": "2026-10-15T21:43:19.717Z",
        "dateUpdated": "2026-10-16T19:39:08.849Z"
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                "dateUpdated": "2026-10-15T21:43:19.717Z"
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            "datePublic": "2026-10-15T00:00:00.000Z",
            "title": "unarr through 1.1.1 Off-by-One Heap Buffer Overflow via tar_get_name",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process."
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                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Off-by-one Error",
                            "cweId": "CWE-193",
                            "type": "CWE"
                        }
                    ]
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            ],
            "affected": [
                {
                    "vendor": "selmf",
                    "product": "unarr",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "1.1.1",
                            "status": "affected",
                            "versionType": "semver"
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                    "packageURL": "pkg:github/selmf/unarr",
                    "repo": "https://github.com/selmf/unarr"
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                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6.9,
                        "baseSeverity": "MEDIUM"
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                        "userInteraction": "REQUIRED",
                        "scope": "UNCHANGED",
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            ],
            "references": [
                {
                    "url": "https://hackmd.io/@haind-pwn/unarr-tar-zip-oob",
                    "tags": [
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                    ]
                },
                {
                    "url": "https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/tar/parse-tar.c#L242-L254",
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                    "url": "https://github.com/selmf/unarr",
                    "tags": [
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                    "name": "VulnCheck Advisory: unarr through 1.1.1 Off-by-One Heap Buffer Overflow via tar_get_name",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/unarr-through-1.1.1-off-by-one-heap-buffer-overflow-via-tar-get-name"
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                {
                    "lang": "en",
                    "value": "HaiND from the Post and Telecommunication Institute of Technology",
                    "type": "finder"
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        "adp": [
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                "references": [
                    {
                        "url": "https://hackmd.io/@haind-pwn/cve-2026-111273-111274-unarr-tar-zip-oob",
                        "tags": [
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                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-16T19:38:21.654864Z",
                                "id": "CVE-2026-111273",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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