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CVE Record

CVE-2023-6884: Plugin for Google Reviews <= 3.1 - Authenticated(Contributor+) Stored Cross-Site Scripting via shortcode

This plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode in all versions up to, and including, 3.1 due to insufficient input sanitization and output escaping on the 'place_id' attribute. This makes it possible for authenticated attackers with contributor-level and above permissions 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

A WordPress review plugin allowed trusted site users to plant JavaScript through a shortcode setting. If a Contributor or higher account is misused, the script could run when someone opens the affected page, risking session theft, content tampering, or admin-targeted actions.

Executive priority

Treat as a moderate website integrity risk. Prioritize public WordPress sites with multiple authors, external contributors, or weak account controls. It is not shown as actively exploited in the supplied sources, but it can turn a low-privilege CMS account into a browser-side attack path.

Technical view

CVE-2023-6884 is stored XSS in Plugin for Google Reviews/Rich Showcase for Google Reviews through insufficient sanitization and escaping of the shortcode place_id attribute in versions up to 3.1. It requires authenticated Contributor-level or higher access and maps to CWE-79 with CVSS 6.4.

Likely exposure

Exposure is mainly WordPress sites using the named Google Reviews plugin at version 3.1 or earlier, especially sites allowing Contributor-level users, guest authors, agencies, or compromised editorial accounts to create shortcode content.

Exploitation context

The supplied bundle does not show CISA KEV listing or confirmed active exploitation. Abuse requires authenticated Contributor-or-higher access, but stored XSS can affect later visitors to the injected page, including privileged administrators.

Researcher notes

The record identifies the vulnerable attribute as place_id in the plugin shortcode. Product naming in the bundle is inconsistent between Plugin for Google Reviews and Rich Showcase for Google Reviews, so confirm by plugin slug and installed code before scoping.

Mitigation direction

  • Identify WordPress sites running the affected Google Reviews plugin.
  • Check whether installed versions are 3.1 or earlier.
  • Review vendor or WordPress plugin guidance for the fixed release.
  • Restrict Contributor-level publishing rights until remediated.
  • Remove suspicious shortcode usage containing unexpected place_id content.
  • Disable the plugin temporarily if vendor guidance is unavailable and risk is unacceptable.

Validation and detection

  • Inventory plugin name, slug, and version across WordPress properties.
  • Review pages and posts containing the plugin shortcode.
  • Confirm Contributor-level users cannot publish unreviewed shortcode content.
  • Check web logs and CMS audit trails for unusual page edits.
  • After remediation, verify shortcode output is safely escaped in rendered pages.
Prepared
Confidence
medium
Sources
6

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-2023-6884 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
5Source 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-2023-6884Attack 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
widgetpackRich Showcase for Google Reviews0unaffected
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.

Open CWE intelligenceSame-CWE CVEs