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CVE Record

CVE-2022-3076: CM Download Manager < 2.8.6 - Admin+ Arbitrary File Upload

The CM Download Manager WordPress plugin before 2.8.6 allows high privilege users such as admin to upload arbitrary files by setting the any extension via the plugin's setting, which could be used by admins of multisite blog to upload PHP files for example.

HighCVSS 7.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CM Download Manager for WordPress before 2.8.6 let high-privilege users configure arbitrary file extensions for upload. In a multisite environment, a site admin could potentially upload executable files such as PHP, creating risk to confidentiality, integrity, and availability.

Executive priority

Prioritize remediation where WordPress multisite is used or many admins have plugin control. The privilege requirement lowers broad internet risk, but impact can be severe if admin boundaries are relied on.

Technical view

This is CWE-434 arbitrary file upload in the CM Download Manager plugin before 2.8.6. The CVSS 3.1 score is 7.2, with network access, low complexity, high privileges required, no user interaction, and high impact across confidentiality, integrity, and availability.

Likely exposure

Exposure is limited to WordPress installations using CM Download Manager versions before 2.8.6, especially multisite deployments where blog administrators can manage plugin upload-extension settings.

Exploitation context

The source bundle does not state active exploitation, and the CVE is not marked KEV. Practical abuse requires high privileges, but multisite admin boundaries make the issue more serious.

Researcher notes

Evidence is concise: WPScan and CVE data describe arbitrary file upload via configurable extensions before 2.8.6. The bundle does not include exploit code, observed exploitation, or detailed vendor remediation notes.

Mitigation direction

  • Upgrade CM Download Manager to version 2.8.6 or later.
  • Restrict plugin administration to trusted users, especially on WordPress multisite.
  • Review plugin settings and disallow executable upload extensions.
  • Follow vendor or WPScan guidance for cleanup and hardening.
  • Investigate unexpected executable uploads if vulnerable versions were used.

Validation and detection

  • Inventory WordPress sites running CM Download Manager.
  • Confirm each installation is on version 2.8.6 or later.
  • Review multisite administrator roles and plugin management permissions.
  • Check plugin upload-extension settings for risky executable types.
  • Inspect uploaded files for unexpected executable content.
Prepared
Confidence
high
Sources
3

Public sources used

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 · medium confidence lookup

CWE-434: File access and web shell behavior lookup

File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2022-3076 mapping review

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

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.2 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

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
7.2CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.2High
CVSS 3.1 vector shape for CVE-2022-3076Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
UnknownCM Download Manager2.8.6Listed
Weakness

CWE details

CWE-434

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