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CVE-2021-39354 - Changeset Plugin

CVE-2021-39354

The Easy Digital Downloads WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the $start_date and $end_date parameters found in the ~/includes/admin/payments/class-payments-table.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 2.11.2.

CVE-2021-39354

MEDIUM CVSS 4.8 Published 2021-10-21 Updated 2025-02-07
AI Risk Moderate (52/100) Active Exploit: No strong signal Published Exploit: Public exploit references found Priority: P4 Planned
Severity Band MEDIUM
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Affected Components 2
Reference Links 3
AI Risk Engine Moderate (52/100)
Exploitability Medium
Active Exploitation No strong signal
Published Exploit Status Public exploit references found

Threat Timeline

  1. 2021-10-21 CVE published and first recorded in the threat feed.
  2. 2025-02-07 Record updated with latest vulnerability metadata.
  3. 2026-04-12 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 4 days ago

AI enriched 4 days ago (2026-04-12 03:13 UTC)

Technical Summary

The Easy Digital Downloads WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the $start_date and $end_date parameters found in the ~/includes/admin/payments/class-payments-table.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 2.11.2.

Potential Impact

Severity is MEDIUM (CVSS 4.8). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Medium based on published exploit references.

Primary risk drivers: published exploit references

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 52/100 (Moderate, Medium) with priority P4 Planned. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Changeset PLUGIN · changeset Affected: <= 2.11.2 Fixed version not specified
Easy Digital Downloads PLUGIN · easy-digital-downloads Affected: <= 2.11.2 Fixed version not specified
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