Security readout for executives and security teams
Plain-English summary
This issue affects the official MailerLite signup forms plugin for WordPress through version 1.5.7. A malicious site could trick a logged-in WordPress administrator into changing the plugin’s MailerLite API key, potentially disrupting signup forms or connecting the site to an unintended MailerLite account.
Executive priority
Treat as a moderate web-application risk. It is unlikely to be a mass compromise issue by itself, but it can affect marketing data flow and third-party integration integrity on exposed WordPress sites.
Technical view
CVE-2022-33201 is a CSRF flaw in the MailerLite WordPress plugin <=1.5.7. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L, reflecting network reachability, low complexity, no attacker account, and required user interaction.
Likely exposure
Exposure is limited to WordPress sites running the official MailerLite plugin at version 1.5.7 or earlier. Risk is highest where administrators remain logged in while browsing external sites.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires social engineering or otherwise inducing an authenticated WordPress administrator to perform a cross-site request.
Researcher notes
Evidence identifies CSRF with API key change impact and affected versions <=1.5.7. The source bundle does not include exploit details, a named fixed version, or evidence of active exploitation, so remediation should follow current vendor guidance.
Mitigation direction
- Inventory WordPress sites using the official MailerLite signup forms plugin.
- Identify and prioritize any installs running version 1.5.7 or earlier.
- Check MailerLite and WordPress plugin guidance for the fixed or recommended version.
- Update, disable, or remove vulnerable plugin installations based on vendor guidance.
- Rotate the MailerLite API key if unexpected changes or abuse are suspected.
Validation and detection
- Confirm the installed plugin version on each WordPress site.
- Review plugin settings for unexpected MailerLite API key changes.
- Check form submission behavior for disruption or unexpected account linkage.
- Review available WordPress audit logs for suspicious administrator setting changes.
- Verify remediation against the vendor or Patchstack advisory.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-352: 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 lookupCVE-2022-33201 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L2.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://patchstack.com/database/vulnerability/official-mailerlite-sign-up-forms/wordpress-mailerlite-signup-forms-official-plugin-1-5-7-cross-site-request-forgery-csrf-vulnerabilityCVE reference · x_refsource_CONFIRM
- https://wordpress.org/plugins/official-mailerlite-sign-up-forms/#developersCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.