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MongoDB Ops Manager CVE-2026-87110

| EUVDEUVD-2026-95490 MEDIUM
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-10-09 cna@mongodb.com GHSA-gcr6-2vh4-232q
6.9
CVSS 4.0 · Vendor: mongodb
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach Ops Manager web port
  2. Delivery
    Identify costly monitoring endpoints
  3. Exploit
    Flood endpoints with repeated requests
  4. Execution
    Exhaust per-process resources
  5. Impact
    Temporary slowdown of co-tenant traffic

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource allocation limits
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires network reachability to the MongoDB Ops Manager web/HTTP port and targets the unauthenticated monitoring endpoints, which perform costly work without rate limiting (the missing throttling control is the core condition, CWE-770). No authentication, user interaction, or special configuration is required - it works against default configurations (PR:N/UI:N/AC:L). What limits impact: the effect is confined to temporary slowdown of other traffic served by the same process (VA:L) and persists only while the attacker sustains the request flood; there is no confidentiality or integrity impact and no crash or permanent denial, so an attacker must maintain continuous traffic to have any effect.

Impact

Using the vendor-supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) this is remotely reachable and unauthenticated with low attack complexity, which raises exposure, but the impact metrics are the decisive signal: only VA:L (low availability impact) with VC:N/VI:N and no subsequent-system impact (SC/SI/SA:N). The description confirms this is a temporary performance degradation of co-tenant traffic on the same process, not a crash or full outage, so the 6.9 'medium' score accurately reflects a nuisance-grade resource-exhaustion issue (CWE-770) rather than a critical flaw. No EPSS score was provided, the CVE is not in CISA KEV, and no public exploit was referenced - so there is no public exploit identified at time of analysis and no evidence of active exploitation. Net assessment: low-to-moderate real-world priority - patch during normal maintenance cycles rather than as an emergency, prioritizing internet-exposed Ops Manager instances. One caveat: no EPSS value was supplied in the input, so exploitation-probability cannot be compared against the KEV/POC signals here.

Exploit ScenarioDerived

A remote attacker with only network reachability to the Ops Manager web port scripts a high-rate loop of requests against the unauthenticated monitoring endpoints, each of which performs costly server-side work. Sustained request volume consumes CPU/processing capacity in the serving process, temporarily slowing legitimate traffic handled by that same process. No exploit code was referenced in the provided data.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 09, 2026

Unauthenticated remote request flooding against MongoDB Ops Manager's monitoring HTTP endpoints can temporarily slow other traffic served by the same process, because those endpoints perform costly work and are not rate limited (CWE-770). Only deployments whose Ops Manager web port is reachable by an attacker are exposed, and exploitation requires no credentials, user interaction, or special configuration per the supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N). The effect is bounded: impact is limited to low availability degradation (VA:L) with no confidentiality or integrity loss and no crash or permanent denial, so an attacker must sustain a continuous request flood to produce any noticeable effect; no public exploit code has been identified at time of analysis and the issue is not listed as confirmed actively exploited (CISA KEV).

RemediationAI

Apply the vendor fix by upgrading MongoDB Ops Manager Server to 8.0.27 or later as documented in the release notes at https://www.mongodb.com/docs/ops-manager/current/release-notes/application/#ops-manager-server-8027 (Vendor-released patch: Ops Manager Server 8.0.27); verify the running build from the Ops Manager version endpoint after upgrading. Where an immediate upgrade is not possible, compensate by removing the Ops Manager web port from untrusted networks - bind or firewall it so only administration hosts and automation runners can reach it - accepting the trade-off that legitimate monitoring agents, backup jobs, and API integrations must be re-homed onto permitted source addresses. Alternatively, place the Ops Manager web tier behind a reverse proxy or ingress that enforces per-source rate limits and request concurrency caps on the monitoring endpoints, with the trade-off that aggressive limits can throttle legitimate health-check and monitoring polling and may generate false degradation alarms; tune thresholds against normal polling volume. Because no public exploit code has been identified at time of analysis, prioritise remediation based on internet or broad-internal reachability of the Ops Manager web port rather than on observed exploitation, and monitor the Ops Manager application logs for sustained high-volume requests to monitoring paths as a detection signal.

Affected VersionsENISA

Ops Manager 8.0.0 <8.0.27
Ops Manager 7.0.0 ≤7.0.23

Affected Packages

euvd ops_manager fix: 8.0.27

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a missing throttling control (CWE-770, Allocation of Resources Without Limits or Throttling) in the MongoDB Ops Manager server's web/HTTP tier, specifically on monitoring endpoints that trigger expensive server-side work on each request. Because each call consumes disproportionate CPU, memory, or backend query time and there is no rate limiting, quota, or request throttling, a single unauthenticated client can drive the same Node/web process into resource contention that degrades concurrent legitimate traffic. The vendor CNA scored this 6.9 under CVSS 4.0 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N); our independent CVSS 3.1 assessment (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) is consistent, treating this as a network-reachable, unauthenticated, low-complexity availability issue confined to the Ops Manager application process - the attacker must maintain steady traffic to cause ongoing slowdown, and there is no subsequent-system (SC/SI/SA) impact. No CPE strings were supplied with the advisory, so affected scope must be derived from the vendor's Ops Manager server release notes.

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Severity by source

Vendor (mongodb) PRIMARY 6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
vuln.today AI 5.3 MEDIUM

Remote, unauthenticated, low-complexity request flooding (AV:N/AC:L/PR:N/UI:N) with no confidentiality/integrity impact and only partial, temporary availability degradation (A:L).

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (mongodb).

CVSS VectorVendor: mongodb

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
None
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

1
Patch available
Oct 09, 2026 - 07:15 EUVD

DescriptionCVE.org

An unauthenticated user with network access to the Ops Manager web port can repeatedly request monitoring endpoints that perform costly work without rate limiting. This can temporarily slow other traffic served by the same process while requests continue.

Threat Intelligence Overview

EPSS Score
0.3%
Top 85% exploitable
Prevalence
Low
self-hosted MongoDB Enterprise management console, used by a subset of deployments
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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