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        "cveId": "CVE-2026-44028",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "state": "PUBLISHED",
        "assignerShortName": "mitre",
        "dateReserved": "2026-05-05T00:29:44.087Z",
        "datePublished": "2026-05-05T00:30:16.205Z",
        "dateUpdated": "2026-05-09T03:40:06.637Z"
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    "containers": {
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            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "Nix",
                    "vendor": "NixOS",
                    "versions": [
                        {
                            "lessThan": "2.28.7",
                            "status": "affected",
                            "version": "2.24.4",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "2.29.4",
                            "status": "affected",
                            "version": "2.29.0",
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                            "lessThan": "2.30.5",
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                            "status": "affected",
                            "version": "2.32.0",
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                        {
                            "lessThan": "2.33.6",
                            "status": "affected",
                            "version": "2.33.0",
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                            "lessThan": "2.34.7",
                            "status": "affected",
                            "version": "2.34.0",
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                {
                    "defaultStatus": "unaffected",
                    "product": "Lix",
                    "vendor": "Lix Project",
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                            "lessThan": "2.93.4",
                            "status": "affected",
                            "version": "2.93.0",
                            "versionType": "semver"
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                            "lessThan": "2.94.2",
                            "status": "affected",
                            "version": "2.94.0",
                            "versionType": "semver"
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                            "lessThan": "2.95.2",
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                            "version": "2.95.0",
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "An issue was discovered in Nix before 2.34.7 and Lix before 2.95.2. Unbounded recursion in the NAR (Nix Archive) parser could lead to a stack-to-heap overflow when the parser is run on a coroutine stack. The stack is allocated without a guard page, which means that a stack overflow could overwrite memory on the heap and could allow arbitrary code execution as the Nix daemon (run as root in multi-user installations) if ASLR hardening is bypassed. This can be exploited by all users able to connect to the daemon (e.g., in Nix, this is configurable via the allowed-users setting, defaulting to all users). The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 for Nix (introduced in 2.24.4); and 2.95.2, 2.94.2, and 2.93.4 for Lix (introduced in 2.93.0)."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
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                            "lang": "en",
                            "value": "GENERAL"
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            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-674",
                            "description": "CWE-674 Uncontrolled Recursion",
                            "lang": "en",
                            "type": "CWE"
                        }
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                "shortName": "mitre",
                "dateUpdated": "2026-05-09T03:40:06.637Z"
            },
            "references": [
                {
                    "url": "https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407"
                },
                {
                    "url": "https://github.com/NixOS/nix/security/advisories/GHSA-vh5x-56v6-4368"
                },
                {
                    "url": "https://www.openwall.com/lists/oss-security/2026/05/04/33"
                },
                {
                    "url": "https://www.openwall.com/lists/oss-security/2026/05/04/32"
                },
                {
                    "url": "https://lix.systems/blog/2026-05-05-lix-unsigned-integer-overflow/"
                }
            ],
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            {
                "metrics": [
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                            "content": {
                                "timestamp": "2026-05-05T14:03:11.111278Z",
                                "id": "CVE-2026-44028",
                                "options": [
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                                        "Exploitation": "none"
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                "title": "CISA ADP Vulnrichment",
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