janet-lang janet compile.c janetc_pop_funcdef out-of-bounds_CVE-2026-2240

4.8 / 10

MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Description

A vulnerability has been found in janet-lang janet up to 1.40.1. The impacted element is the function janetc_pop_funcdef of the file src/core/compile.c. Such manipulation leads to out-of-bounds read. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The name of the patch is 4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5. A patch should be applied to remediate this issue.

Basic Information

ID CVE-2026-2240

Source VulDB

Published Feb 9, 2026 at 15:32

Modified Feb 9, 2026 at 16:06

Affected Product

Vendor janet-lang

Product janet

Version 1.40.0

Affected Versions janet-lang janet 1.40.0
janet-lang janet 1.40.1

CWE Classification

CWE-125 CWE-119

References

{
    "lastseen": "",
    "description": "A vulnerability has been found in janet-lang janet up to 1.40.1. The impacted element is the function janetc_pop_funcdef of the file src/core/compile.c. Such manipulation leads to out-of-bounds read. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The name of the patch is 4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5. A patch should be applied to remediate this issue.",
    "published": "2026-02-09T15:32:10.307Z",
    "modified": "2026-02-09T16:06:52.054Z",
    "type": "cve",
    "title": "janet-lang janet compile.c janetc_pop_funcdef out-of-bounds",
    "source": "VulDB",
    "references": "https://vuldb.com/?id.344979\nhttps://vuldb.com/?ctiid.344979\nhttps://vuldb.com/?submit.753155\nhttps://github.com/janet-lang/janet/issues/1702\nhttps://github.com/janet-lang/janet/issues/1702#issuecomment-3790473369\nhttps://github.com/oneafter/0123/blob/main/ja4/repro\nhttps://github.com/janet-lang/janet/commit/4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5\nhttps://github.com/janet-lang/janet/",
    "id": "CVE-2026-2240",
    "bulletinFamily": "",
    "cwe": [
        "CWE-125",
        "CWE-119"
    ],
    "cvelist": null,
    "sourceData": "janet-lang janet 1.40.0\njanet-lang janet 1.40.1",
    "sourceHref": "",
    "cvss": {
        "score": 4.8,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "janet",
    "version": "1.40.0",
    "vendor": "janet-lang",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}