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CVE Record

CVE-2026-82067: Improper Case Sensitivity Handling in MongoDB Server Configuration Validation May Cause Authorization to Remain Disabled at Startup

Improper handling of case sensitivity in the configuration validation component of MongoDB Server may cause the authorization subsystem to remain in a default disabled state during server startup. An unauthenticated user with network access to a deployment where this condition occurs can perform arbitrary administrative operations, resulting in full impact of data confidentiality, integrity, and availability.

CriticalCVSS 9.2Not KEV-listedUpdated
Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

A startup configuration case-sensitivity error can leave MongoDB authorization disabled when administrators expect it enabled. If an affected database is reachable over a network, an unauthenticated attacker could gain administrative control and read, alter, or destroy data. Exposure depends on the vulnerable condition occurring during startup.

Executive priority

Treat as an emergency for exposed or recently restarted listed versions because failed authorization could surrender complete database control. Immediately identify affected deployments, confirm authorization is active, reduce network reachability, and follow MongoDB's advisory. Internally isolated instances still require prompt review because network access from a compromised system may be sufficient.

Technical view

MongoDB Server configuration validation may mishandle letter case, causing the authorization subsystem to retain its default disabled state. The supplied record identifies versions 8.3.0, 8.0.0, and 7.0.0. Exploitation requires network access and the startup condition, but needs no privileges or user interaction. CVSS 4.0 score: 9.2.

Likely exposure

Highest risk applies to listed MongoDB versions that restarted with the triggering configuration condition and are reachable from untrusted networks. The bundle marks other versions unaffected by default, but provides no detailed configuration pattern, deployment prevalence, or reliable remote indicator.

Exploitation context

The CVE is not listed as KEV in the supplied bundle, and no provided source reports active exploitation. Successful abuse requires the authorization-disabled startup condition plus network reachability. Under those circumstances, an unauthenticated user could perform arbitrary administrative operations with full confidentiality, integrity, and availability impact.

Researcher notes

CWE-178 describes improper case-sensitivity handling. The attack requirement marked AT:P reflects dependence on the startup condition. The supplied material does not identify the exact case variant, affected configuration key, fixed release, patch, detection signature, or proof of exploitation; those details should not be inferred.

Mitigation direction

  • Check MongoDB's SERVER-131229 advisory for confirmed fixed versions and configuration guidance.
  • Prioritize affected instances reachable from the internet or other untrusted networks.
  • Restrict database network access to explicitly trusted systems while remediation is pending.
  • Restart only under controlled change procedures after validating authorization configuration and vendor guidance.

Validation and detection

  • Inventory MongoDB Server instances running exactly 8.3.0, 8.0.0, or 7.0.0.
  • Review startup configuration and logs for evidence that authorization became enabled.
  • Verify unauthenticated clients cannot perform administrative operations using an authorized, non-destructive test.
  • Recheck authorization after every restart until vendor-confirmed remediation is applied.
Prepared
Confidence
high
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-178: Exact CWE lookup

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Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-82067 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.2 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
3Timeline events
1ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.2CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——mongodb
8.1CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9mongodb

Vulnerability scoring details

Base CVSS 4.0 score

9.2Critical
CVSS 4.0 vector shape for CVE-2026-82067Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
MongoDBMongoDB Server8.3.0, 8.0.0, 7.0.0unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-178 · source CWE mapping

Improper Handling of Case Sensitivity

Improper Handling of Case Sensitivity represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.