Zen-C has Stack-Based Buffer Overflow in Identifier Mangling

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-33491",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2026-03-26T19:52:10.550Z",
    "dateReserved": "2026-03-20T16:16:48.971Z",
    "datePublished": "2026-03-26T18:39:55.093Z",
    "state": "PUBLISHED"
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        "shortName": "GitHub_M",
        "dateUpdated": "2026-03-26T18:39:55.093Z"
      },
      "title": "Zen-C has Stack-Based Buffer Overflow in Identifier Mangling",
      "descriptions": [
        {
          "lang": "en",
          "value": "Zen C is a systems programming language that compiles to human-readable GNU C/C11. Prior to version 0.4.4, a stack-based buffer overflow vulnerability in the Zen C compiler allows attackers to cause a compiler crash or potentially execute arbitrary code by providing a specially crafted Zen C source file (`.zc`) with excessively long struct, function, or trait identifiers. Users are advised to update to Zen C version v0.4.4 or later to receive a patch."
        }
      ],
      "affected": [
        {
          "vendor": "zenc-lang",
          "product": "zenc",
          "versions": [
            {
              "version": "< 0.4.4",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-121: Stack-based Buffer Overflow",
              "cweId": "CWE-121",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-787: Out-of-bounds Write",
              "cweId": "CWE-787",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/zenc-lang/zenc/security/advisories/GHSA-rv74-w6q7-h8xr",
          "name": "https://github.com/zenc-lang/zenc/security/advisories/GHSA-rv74-w6q7-h8xr",
          "tags": [
            "x_refsource_CONFIRM"
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            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "attackVector": "LOCAL",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "REQUIRED",
            "scope": "UNCHANGED",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH"
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    },
    "adp": [
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