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        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-02-25T15:28:40.648Z",
        "datePublished": "2026-02-26T22:17:58.898Z",
        "dateUpdated": "2026-03-02T20:48:09.055Z"
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    "containers": {
        "cna": {
            "title": "Zen-C Vulnerable to Command Injection via Malicious Output Filename",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-78",
                            "lang": "en",
                            "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
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                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "LOW",
                        "baseScore": 6.6,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L",
                        "version": "3.1"
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            "references": [
                {
                    "name": "https://github.com/z-libs/Zen-C/security/advisories/GHSA-9rff-x96h-76h2",
                    "tags": [
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                    "url": "https://github.com/z-libs/Zen-C/security/advisories/GHSA-9rff-x96h-76h2"
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            "affected": [
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                    "vendor": "z-libs",
                    "product": "Zen-C",
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                            "version": "< 0.4.2",
                            "status": "affected"
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                    "lang": "en",
                    "value": "Zen C is a systems programming language that compiles to human-readable GNU C/C11. Prior to version 0.4.2, a command injection vulnerability (CWE-78) in the Zen C compiler allows local attackers to execute arbitrary shell commands by providing a specially crafted output filename via the `-o` command-line argument. The vulnerability existed in the `main` application logic (specifically in `src/main.c`), where the compiler constructed a shell command string to invoke the backend C compiler. This command string was built by concatenating various arguments, including the user-controlled output filename, and was subsequently executed using the `system()` function. Because `system()` invokes a shell to parse and execute the command, shell metacharacters within the output filename were interpreted by the shell, leading to arbitrary command execution. An attacker who can influence the command-line arguments passed to the `zc` compiler (like through a build script or a CI/CD pipeline configuration) can execute arbitrary commands with the privileges of the user running the compiler. The vulnerability has been fixed in version 0.4.2 by removing `system()` calls, implementing `ArgList`, and internal argument handling. Users are advised to update to Zen C version v0.4.2 or later."
                }
            ],
            "source": {
                "advisory": "GHSA-9rff-x96h-76h2",
                "discovery": "UNKNOWN"
            }
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                    "dateUpdated": "2026-02-27T16:57:44.054Z"
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                "references": [
                    {
                        "url": "https://f0nduesav0yarde.github.io/blog/vulnerabilities/cve-2026-28207/"
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                            "content": {
                                "timestamp": "2026-03-02T20:48:05.636087Z",
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