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[GHSA-2v37-7h3g-55p8] nanoid (Nano ID) before 5.1.6 contains an infinite loop... #8955

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[GHSA-2v37-7h3g-55p8] nanoid (Nano ID) before 5.1.6 contains an infinite loop... #8955

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48 changes: 42 additions & 6 deletions advisories/unreviewed/2026/07/GHSA-2v37-7h3g-55p8/GHSA-2v37-7h3g-55p8.json
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{
"schema_version": "1.4.0",
"id": "GHSA-2v37-7h3g-55p8",
"modified": "2026-07-29T15:31:12Z",
"modified": "2026-07-29T15:31:18Z",
"published": "2026-07-29T15:31:12Z",
"aliases": [
"CVE-2026-67213"
],
"summary": "Infinite loop in Nano ID on size 0",
"details": "nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "nanoid"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "5.1.6"
}
]
}
]
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
"package": {
"ecosystem": "npm",
"name": "nanoid"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.17"
}
]
}
]
}
],
"affected": [],
"references": [
{
"type": "ADVISORY",
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