Out-of-Bounds Read/Write in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Memory Disclosure
An issue in MongoDB Server's handling of timeseries collections could allow an authenticated user with write privileges to cause an internal data structure to become inconsistent through certain document insertions. A subsequent insert into the affected bucket could then result in the server accessing memory outside its intended bounds, potentially causing a server crash (denial of service), exposure of limited memory contents, or memory corruption.
BIT-mongodb-2026-18693
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-2026-18693
mongodb
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 7.0.40
Source reference:
/affected/0/ranges8.0.29Source reference:
/affected/0/ranges8.3.8Source 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": "7.0.0"
},
{
"fixed": "7.0.40"
},
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.29"
},
{
"introduced": "8.2.0"
},
{
"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:L/AT:N/PR:L/UI:N/VC:L/VI:L/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-2026-18693.json"
}
}
]- Related CVEs
- CVE-2026-18693
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #59526 · Revision 1
- Added to Heist Feed
- Publisher date