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vuln-cve/data/2026/2xxx/CVE-2026-2016.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-2016",
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"state": "PUBLISHED",
"assignerShortName": "VulDB",
"dateReserved": "2026-02-05T19:35:28.683Z",
"datePublished": "2026-02-06T11:02:08.107Z",
"dateUpdated": "2026-02-23T09:24:15.968Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB",
"dateUpdated": "2026-02-23T09:24:15.968Z"
},
"title": "happyfish100 libfastcommon base64.c base64_decode stack-based overflow",
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-121",
"lang": "en",
"description": "Stack-based Buffer Overflow"
}
]
},
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-119",
"lang": "en",
"description": "Memory Corruption"
}
]
}
],
"affected": [
{
"vendor": "happyfish100",
"product": "libfastcommon",
"versions": [
{
"version": "1.0.0",
"status": "affected"
},
{
"version": "1.0.1",
"status": "affected"
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{
"version": "1.0.2",
"status": "affected"
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{
"version": "1.0.3",
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{
"version": "1.0.4",
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{
"version": "1.0.5",
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{
"version": "1.0.6",
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{
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"version": "1.0.43",
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{
"version": "1.0.44",
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{
"version": "1.0.45",
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{
"version": "1.0.46",
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{
"version": "1.0.47",
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{
"version": "1.0.48",
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{
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{
"version": "1.0.50",
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"version": "1.0.51",
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"version": "1.0.52",
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"version": "1.0.53",
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{
"version": "1.0.54",
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"version": "1.0.55",
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"version": "1.0.56",
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{
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{
"version": "1.0.59",
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{
"version": "1.0.60",
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{
"version": "1.0.61",
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{
"version": "1.0.62",
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{
"version": "1.0.63",
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{
"version": "1.0.64",
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{
"version": "1.0.65",
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{
"version": "1.0.66",
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{
"version": "1.0.67",
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{
"version": "1.0.68",
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{
"version": "1.0.69",
"status": "affected"
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{
"version": "1.0.70",
"status": "affected"
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{
"version": "1.0.71",
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{
"version": "1.0.72",
"status": "affected"
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{
"version": "1.0.73",
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{
"version": "1.0.74",
"status": "affected"
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{
"version": "1.0.75",
"status": "affected"
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{
"version": "1.0.76",
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{
"version": "1.0.77",
"status": "affected"
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{
"version": "1.0.78",
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{
"version": "1.0.79",
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{
"version": "1.0.80",
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{
"version": "1.0.81",
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{
"version": "1.0.82",
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{
"version": "1.0.83",
"status": "affected"
},
{
"version": "1.0.84",
"status": "affected"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64_decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The identifier of the patch is 82f66af3e252e3e137dba0c3891570f085e79adf. Applying a patch is the recommended action to fix 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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
"baseSeverity": "MEDIUM"
}
},
{
"cvssV3_1": {
"version": "3.1",
"baseScore": 5.3,
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C",
"baseSeverity": "MEDIUM"
}
},
{
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"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C",
"baseSeverity": "MEDIUM"
}
},
{
"cvssV2_0": {
"version": "2.0",
"baseScore": 4.3,
"vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C"
}
}
],
"timeline": [
{
"time": "2026-02-05T00:00:00.000Z",
"lang": "en",
"value": "Advisory disclosed"
},
{
"time": "2026-02-05T01:00:00.000Z",
"lang": "en",
"value": "VulDB entry created"
},
{
"time": "2026-02-18T01:03:36.000Z",
"lang": "en",
"value": "VulDB entry last update"
}
],
"credits": [
{
"lang": "en",
"value": "liloler (VulDB User)",
"type": "reporter"
}
],
"references": [
{
"url": "https://vuldb.com/?id.344598",
"name": "VDB-344598 | happyfish100 libfastcommon base64.c base64_decode stack-based overflow",
"tags": [
"vdb-entry",
"technical-description"
]
},
{
"url": "https://vuldb.com/?ctiid.344598",
"name": "VDB-344598 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
]
},
{
"url": "https://vuldb.com/?submit.743873",
"name": "Submit #743873 | happyfish100 libfastcommon V1.0.84 and earlier Heap-based Buffer Overflow",
"tags": [
"third-party-advisory"
]
},
{
"url": "https://github.com/happyfish100/libfastcommon/issues/55",
"tags": [
"issue-tracking"
]
},
{
"url": "https://github.com/happyfish100/libfastcommon/issues/55#issuecomment-3776757848",
"tags": [
"issue-tracking"
]
},
{
"url": "https://github.com/happyfish100/libfastcommon/issues/55#issue-3836362577",
"tags": [
"exploit",
"issue-tracking"
]
},
{
"url": "https://github.com/happyfish100/libfastcommon/commit/82f66af3e252e3e137dba0c3891570f085e79adf",
"tags": [
"patch"
]
},
{
"url": "https://github.com/happyfish100/libfastcommon/",
"tags": [
"product"
]
}
],
"tags": [
"x_open-source"
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-02-06T13:08:24.871953Z",
"id": "CVE-2026-2016",
"options": [
{
"Exploitation": "none"
},
{
"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": "2026-02-06T13:08:43.137Z"
}
}
]
}
}