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CVE Record

CVE-2023-0081: MonsterInsights < 8.12.1 - Contributor+ Stored XSS

The MonsterInsights WordPress plugin before 8.12.1 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

MediumCVSS 5.4Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

MonsterInsights for WordPress before 8.12.1 could let a logged-in contributor or higher-privileged user store malicious script content in plugin block options. The script would run when another user views the affected page or post. This is moderate business risk, mainly where many users can edit content.

Executive priority

Treat this as a scheduled but prompt WordPress plugin update, with higher urgency on multi-author sites or sites with untrusted contributors. It is not identified as actively exploited in the provided sources.

Technical view

The issue is a stored cross-site scripting flaw caused by missing validation and escaping of some MonsterInsights block options before page or post output. CVSS 3.1 is 5.4: network reachable, low complexity, low privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.

Likely exposure

Exposure is limited to WordPress sites running MonsterInsights before 8.12.1 and allowing contributor-level or higher accounts to create or edit content using affected blocks.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. WPScan is tagged with exploit and technical description, so public technical details may exist, but active exploitation is not established here.

Researcher notes

The key exposure condition is authenticated content access, not unauthenticated remote attack. Validate version, role model, and affected block usage. The provided bundle does not include detailed vendor notes beyond the fixed-version boundary.

Mitigation direction

  • Update MonsterInsights to version 8.12.1 or later.
  • Restrict contributor and higher content-editing access to trusted users.
  • Review posts and pages containing MonsterInsights blocks for unexpected changes.
  • Check vendor and WPScan guidance for any additional recommendations.
  • Monitor WordPress admin activity for suspicious content edits.

Validation and detection

  • Inventory WordPress sites using the MonsterInsights plugin.
  • Confirm each installed MonsterInsights version is 8.12.1 or later.
  • Identify users with contributor, author, editor, or administrator roles.
  • Review content containing MonsterInsights blocks for unauthorized edits.
  • Confirm remediation in staging before production rollout where practical.
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-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-0081 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
Medium
CVSS
5.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A: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.

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
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2023-0081Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
UnknownMonsterInsights0unaffected
Weakness

CWE details

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

CWE-79 · source CWE mapping

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.