CVE catalog
CVE-2026-40879
Nest is a framework for building scalable Node.js…
Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.33% · Oct 27, 2026
Reported versions and fixes
Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.
| Distribution / release | Package | Version | Status | Source |
|---|---|---|---|---|
| UnknownRelease not reported | nest | 11.1.19 | UnknownSource applicability is not established | Provider not reported |
Provider details and historical evidence
| Distribution / release | Package | Version | Status | Source |
|---|---|---|---|---|
| UnknownRelease not reported | nest | 11.1.19 | UnknownSource applicability is not established | Provider not reported |
Original provider fields
{
"package_releases": [],
"fixed_versions": [],
"distribution_packages": [
{
"name": "nest",
"fixed_version": "11.1.19",
"applicability_unknown": true
},
{
"name": "nest",
"ranges": [
{
"fixed": "11.1.19",
"introduced": "",
"last_affected": "",
"start_excluding": ""
}
],
"ecosystem": "cpe",
"provider_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40879",
"fixed_version": "11.1.19",
"provider_source": "nvd",
"provider_record_id": "NVD-CVE-2026-40879",
"provider_updated_at": "2026-10-26T21:10:00.170"
}
]
}OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
Observed: