CVE-2026-33491

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Source

https://cve.org/CVERecord?id=CVE-2026-33491

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33491.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-33491

Aliases

GHSA-rv74-w6q7-h8xr

Published

2026-03-26T18:39:55Z

Modified

2026-08-27T03:57:08Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator

Summary

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

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-121",
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33491.json"
}

References

Affected packages

Git / github.com/zenc-lang/zenc

Affected ranges

Type

GIT

Repo

https://github.com/zenc-lang/zenc

Events

Introduced

Fixed

5ec697eecc95aeb702902e8838bcd6711ecafeaf

Database specific

Show details

{
    "cpe": "cpe:2.3:a:zenc-lang:zen_c:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.4.4"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v0.*

v0.1.0

v0.1.1

v0.1.2

v0.1.3

v0.1.3b

v0.4.0

v0.4.1

v0.4.2

v0.4.3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33491.json"