Use-After-Free in MongoDB $graphLookup Aggregation Stage Leads to Denial of Service and Potential Remote Code Execution
An issue in MongoDB Server's $graphLookup aggregation stage could allow an authenticated user able to issue aggregation and memory-management commands to cause an internal reference to be used after the underlying memory has been freed. This could result in a server crash or, potentially, execution of unintended code.
BIT-mongodb-2026-18706
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-mongodb-2026-18706
mongodb
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 8.3.8
Source reference:
/affected/0/ranges9.0.2Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "8.3.0"
},
{
"fixed": "8.3.8"
},
{
"introduced": "9.0.0"
},
{
"fixed": "9.0.2"
}
]
}
],
"package": {
"name": "mongodb",
"purl": "pkg:bitnami/mongodb",
"ecosystem": "Bitnami"
},
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/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"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/mongodb/BIT-mongodb-2026-18706.json"
}
}
]- Related CVEs
- CVE-2026-18706
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #59507 · Revision 1
- Added to Heist Feed
- Publisher date