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CVE Record

CVE-2023-7071: Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates <= 4.4.6 - Authenticated (Contributor+) Stored Cross-Site Scripting

The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Table of Contents block in all versions up to, and including, 4.4.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a stored cross-site scripting flaw in the WordPress Essential Blocks plugin. A logged-in Contributor or higher user could place script content through the Table of Contents block, causing it to run when others view the affected page.

Executive priority

Treat as a moderate-priority web content integrity issue. It is not unauthenticated remote takeover, but it can expose visitors or administrators to malicious script if lower-privileged accounts are abused.

Technical view

CVE-2023-7071 affects Essential Blocks versions up to and including 4.4.6. The issue is insufficient sanitization and output escaping in the Table of Contents block, classified as CWE-79. CVSS 3.1 score is 6.4 with low privileges required and changed scope.

Likely exposure

Exposure is most likely on WordPress sites running Essential Blocks 4.4.6 or earlier where Contributor-level users or higher can create or edit block content.

Exploitation context

The provided sources do not show CISA KEV listing or confirmed active exploitation. The attack requires authenticated content access but can persist in pages and affect users who later view the injected content.

Researcher notes

Key validation points are plugin version, role exposure, and Table of Contents block usage. The source evidence identifies the vulnerable component and a 4.4.7 code changeset, but does not provide active exploitation evidence.

Mitigation direction

  • Upgrade Essential Blocks beyond vulnerable versions, with 4.4.7 referenced as the fix changeset.
  • Restrict Contributor and higher access to trusted users only.
  • Review existing Table of Contents block content for suspicious embedded script behavior.
  • Check vendor and Wordfence guidance for any newer remediation notes.
  • Remove or disable the plugin if timely updating is not possible.

Validation and detection

  • Inventory WordPress sites for Essential Blocks versions 4.4.6 or earlier.
  • Confirm updated sites are running a version newer than 4.4.6.
  • Review affected pages using the Table of Contents block.
  • Check WordPress users with Contributor, Author, Editor, or Administrator roles.
  • Look for unexpected script execution reports tied to plugin-authored pages.
Prepared
Confidence
high
Sources
5

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.

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cve · low confidence lookup

CVE-2023-7071 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
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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
4Source 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
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2023-7071Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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
wpdevteamGutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns0unaffected
Weakness

CWE details

CWE-79

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.

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