CVE-2026-120828

Memory exhaustion via abandoned far-future read-concern waiters in disaggregated storage

Published Nov 10, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Description

A replica-set database server node does not limit or reclaim internal wait records created while handling a client-supplied read option that names a point in time the node will never reach. A party with network access and no credentials can cause these records to accumulate without bound and persist after the requests end, which may make the server run out of memory and become unavailable.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

MongoDB

MongoDB Server

unaffected

Version	Status	Constraints
`9.0.0`	affected	< 9.0.7
`8.3.0`	affected	< 8.3.16
`8.0.0`	affected	< 8.0.37
`7.0.0`	affected	< 7.0.48
`6.0.0`	affected	< 6.0.30
`5.0.0`	affected	< 5.0.35
`4.4.0`	affected	< 4.4.32

No data.

Vendor Product Versions

Mongodb

Mongodb Server

Version	Status	Scheme	Platform
`[9.0.0,9.0.7)`	affected	semver	—
`[8.3.0,8.3.16)`	affected	semver	—
`[8.0.0,8.0.37)`	affected	semver	—
`[7.0.0,7.0.48)`	affected	semver	—
`[6.0.0,6.0.30)`	affected	semver	—
`[5.0.0,5.0.35)`	affected	semver	—
`[4.4.0,4.4.32)`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.479% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://jira.mongodb.org/browse/SERVER-138119

History

Nov 12, 2026 5:00 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Mongodb Mongodb mongodb Server
Vendors & Products		Mongodb Mongodb mongodb Server

Nov 10, 2026 8:30 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A replica-set database server node does not limit or reclaim internal wait records created while handling a client-supplied read option that names a point in time the node will never reach. A party with network access and no credentials can cause these records to accumulate without bound and persist after the requests end, which may make the server run out of memory and become unavailable.
Title		Memory exhaustion via abandoned far-future read-concern waiters in disaggregated storage
Weaknesses		CWE-770
References		https://jira.mongodb.org/browse/SERVER-138119
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}` cvssV4_0 `{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}`