Security readout for executives and security teams
Plain-English summary
This affects WordPress sites using WooCommerce Etsy Integration through version 3.3.1. A malicious site or link could cause a logged-in administrator’s browser to delete an export feed without proper confirmation. The impact is limited, but it can disrupt store operations that depend on those feeds.
Executive priority
Handle in the normal vulnerability queue unless the plugin supports critical sales or fulfillment workflows. Prioritize faster if export feeds drive marketplace revenue, inventory synchronization, or customer-facing operations.
Technical view
CVE-2021-4409 is a CSRF issue in Etsy Integration For WooCommerce. Missing or incorrect nonce validation in etcpf_delete_feed() allows an unauthenticated attacker to trigger feed deletion if an administrator performs a crafted action. CVSS 3.1 is 4.3 with required user interaction and low integrity impact.
Likely exposure
Exposure is limited to WordPress installations running Etsy Integration For WooCommerce at version 3.3.1 or earlier. The attacker does not need an account, but successful abuse requires a logged-in administrator to interact with attacker-controlled content.
Exploitation context
The source bundle does not show CISA KEV listing or evidence of active exploitation. Public references describe the weakness class and affected plugin behavior, but do not prove exploitation in the wild.
Researcher notes
The key control failure is nonce validation around etcpf_delete_feed(). Validation should focus on installed version, plugin provenance, and whether the WordPress changeset or vendor release introduced proper nonce checks for feed deletion.
Mitigation direction
- Upgrade to a vendor-fixed release newer than 3.3.1, if available.
- Check WordPress plugin guidance for the current supported remediation.
- Disable the plugin if no safe update is available.
- Limit administrator browsing while logged into WordPress.
- Review feed deletion events for unexplained changes.
Validation and detection
- Inventory WordPress sites using Etsy Integration For WooCommerce.
- Confirm installed plugin versions are not 3.3.1 or earlier.
- Review whether feed deletion actions enforce nonce validation.
- Check store operations for missing or unexpectedly deleted export feeds.
- Look for administrator reports of suspicious links around deletion timing.
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-2021-4409 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
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
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:N/I:L/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/99489cc0-2e73-4d55-b95f-46d574897fac?source=cveCVE reference
- https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/CVE reference
- https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/CVE reference
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/CVE reference
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/CVE reference
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/CVE reference
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/CVE reference
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/CVE reference
- https://plugins.trac.wordpress.org/changeset/2573194CVE reference
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.