LiveActive security incident?Get immediate response
CVE Record

CVE-2023-3709: Royal Elementor Addons <=1.3.70 - Unauthenticated MailChimp API Key Disclosure

The Royal Elementor Addons plugin for WordPress is vulnerable to unauthenticated API key disclosure in versions up to, and including, 1.3.70 due to the plugin adding the API key to the source code of any page running the MailChimp block. This makes it possible for unauthenticated attackers to obtain a site's MailChimp API key. We recommend resetting any MailChimp API keys if running a vulnerable version of this plugin with the MailChimp block enabled as the API key may have been compromised.

MediumCVSS 5.3Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-3709 exposes a MailChimp API key from WordPress pages using the Royal Elementor Addons MailChimp block. An unauthenticated visitor could obtain that key from page source. Business impact is mainly loss of confidentiality for the MailChimp integration, not site takeover based on the provided sources.

Executive priority

Treat as a moderate-priority credential exposure. Prioritize affected marketing or customer-communication sites because exposed MailChimp keys may allow misuse of connected email-marketing resources, even though the sources do not indicate full WordPress compromise or active exploitation.

Technical view

Royal Elementor Addons for Elementor versions up to and including 1.3.70 disclose the configured MailChimp API key in rendered source for pages running the MailChimp block. The CVSS 3.1 score is 5.3, network-exploitable, low complexity, no privileges, no user interaction, confidentiality-only impact.

Likely exposure

Exposure is likely limited to WordPress sites using Royal Elementor Addons <=1.3.70 with the MailChimp block enabled on public pages. Sites not using the plugin, not using the MailChimp block, or not exposing affected pages are not indicated as affected by the provided evidence.

Exploitation context

The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The issue is still easy to discover because the secret is placed in public page source when the vulnerable configuration is present.

Researcher notes

Evidence supports CWE-200 information disclosure in a specific plugin feature. The affected condition depends on both vulnerable plugin version and MailChimp block usage. The provided sources do not name observed exploitation, complete attacker impact after key theft, or a specific fixed version beyond the referenced plugin changeset.

Mitigation direction

  • Identify sites running Royal Elementor Addons <=1.3.70.
  • Check vendor or WordPress plugin guidance for the corrected release.
  • Update the plugin if a fixed version is available.
  • Reset MailChimp API keys for affected sites using the MailChimp block.
  • Remove or disable affected MailChimp blocks until remediated.

Validation and detection

  • Inventory Royal Elementor Addons versions across WordPress properties.
  • Confirm whether public pages use the MailChimp block.
  • Review rendered page source for unintended MailChimp API key exposure.
  • Verify exposed MailChimp API keys have been reset or revoked.
  • Check MailChimp account activity for unexpected use.
Prepared
Confidence
high
Sources
4

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-200: Information exposure and cloud metadata lookup

Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2023-3709 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
5.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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
3Source 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
5.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.3Medium
CVSS 3.1 vector shape for CVE-2023-3709Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
wproyalRoyal Addons for Elementor – Addons and Templates Kit for Elementor0unaffected
Weakness

CWE details

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

CWE-200 · source CWE mapping

Exposure of Sensitive Information to an Unauthorized Actor

Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.