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vuln-cve/data/2026/2xxx/CVE-2026-2240.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-2240",
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"state": "PUBLISHED",
"assignerShortName": "VulDB",
"dateReserved": "2026-02-09T09:38:25.338Z",
"datePublished": "2026-02-09T15:32:10.307Z",
"dateUpdated": "2026-02-23T10:00:07.480Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB",
"dateUpdated": "2026-02-23T10:00:07.480Z"
},
"title": "janet-lang janet compile.c janetc_pop_funcdef out-of-bounds",
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-125",
"lang": "en",
"description": "Out-of-Bounds Read"
}
]
},
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-119",
"lang": "en",
"description": "Memory Corruption"
}
]
}
],
"affected": [
{
"vendor": "janet-lang",
"product": "janet",
"versions": [
{
"version": "1.40.0",
"status": "affected"
},
{
"version": "1.40.1",
"status": "affected"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"version": "4.0",
"baseScore": 4.8,
"vectorString": "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",
"baseSeverity": "MEDIUM"
}
},
{
"cvssV3_1": {
"version": "3.1",
"baseScore": 3.3,
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"baseSeverity": "LOW"
}
},
{
"cvssV3_0": {
"version": "3.0",
"baseScore": 3.3,
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"baseSeverity": "LOW"
}
},
{
"cvssV2_0": {
"version": "2.0",
"baseScore": 1.7,
"vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"
}
}
],
"timeline": [
{
"time": "2026-02-09T00:00:00.000Z",
"lang": "en",
"value": "Advisory disclosed"
},
{
"time": "2026-02-09T01:00:00.000Z",
"lang": "en",
"value": "VulDB entry created"
},
{
"time": "2026-02-09T18:15:47.000Z",
"lang": "en",
"value": "VulDB entry last update"
}
],
"credits": [
{
"lang": "en",
"value": "Oneafter (VulDB User)",
"type": "reporter"
}
],
"references": [
{
"url": "https://vuldb.com/?id.344979",
"name": "VDB-344979 | janet-lang janet compile.c janetc_pop_funcdef out-of-bounds",
"tags": [
"vdb-entry",
"technical-description"
]
},
{
"url": "https://vuldb.com/?ctiid.344979",
"name": "VDB-344979 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
]
},
{
"url": "https://vuldb.com/?submit.753155",
"name": "Submit #753155 | janet-lang janet 883dde4 Heap-based Buffer Overflow",
"tags": [
"third-party-advisory"
]
},
{
"url": "https://github.com/janet-lang/janet/issues/1702",
"tags": [
"issue-tracking"
]
},
{
"url": "https://github.com/janet-lang/janet/issues/1702#issuecomment-3790473369",
"tags": [
"issue-tracking"
]
},
{
"url": "https://github.com/oneafter/0123/blob/main/ja4/repro",
"tags": [
"exploit"
]
},
{
"url": "https://github.com/janet-lang/janet/commit/4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5",
"tags": [
"patch"
]
},
{
"url": "https://github.com/janet-lang/janet/",
"tags": [
"product"
]
}
],
"tags": [
"x_open-source"
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-02-09T16:06:11.954193Z",
"id": "CVE-2026-2240",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-02-09T16:06:52.054Z"
}
}
]
}
}