Security readout for executives and security teams
Plain-English summary
CVE-2020-36751 affects the WordPress Coupon Creator plugin through version 3.1. A malicious site or link could cause a logged-in administrator to unintentionally change coupon-related metadata. The business impact is limited integrity risk, not direct data theft or service outage, but exposed WordPress sites should still remove or update vulnerable plugin versions.
Executive priority
Treat this as a scheduled remediation item, not an emergency incident, unless vulnerable public WordPress sites are business-critical or administrators recently interacted with suspicious links. Prioritize inventory and removal or update of affected plugin versions.
Technical view
The issue is CWE-352 cross-site request forgery caused by missing or incorrect nonce validation in the plugin's save_meta() function. The CVSS 3.1 score is 4.3: network reachable, low attack complexity, no privileges required, user interaction required, low integrity impact, and no confidentiality or availability impact.
Likely exposure
Exposure is mainly WordPress sites running Coupon Creator versions up to and including 3.1, especially where administrators are actively logged in and can be socially engineered. The bundle does not provide a complete asset discovery method or a clearly named patched version.
Exploitation context
The provided sources do not indicate CISA KEV listing or confirmed active exploitation. Exploitation requires tricking a site administrator into performing an action such as clicking a link, which limits automation but remains plausible in phishing scenarios.
Researcher notes
The affected description and CVSS details are clear, but the source bundle has incomplete version metadata and no explicit exploit-in-the-wild evidence. Avoid assuming broader WordPress compromise; the stated impact is unauthorized metadata modification through CSRF after administrator interaction.
Mitigation direction
- Inventory WordPress sites for the Coupon Creator plugin and installed version.
- If version is 3.1 or older, check vendor or WordPress plugin guidance immediately.
- Update, disable, or remove vulnerable installations based on official plugin guidance.
- Limit administrator browsing from authenticated WordPress sessions where practical.
- Monitor coupon metadata for unexpected changes until exposure is resolved.
Validation and detection
- Confirm whether Coupon Creator is installed on each WordPress site.
- Record the installed plugin version and compare it with the affected range.
- Review administrative change history for unexpected coupon or metadata updates.
- For code review, verify nonce validation around save_meta().
- Check vendor advisories and WordPress plugin repository history for fixed releases.
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-2020-36751 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/ab57f010-4fd2-40c2-950f-c03888521c8f?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/2368658/coupon-creator/tags/2.5.2.1/plugin-engine/src/Pngx/Admin/Meta.phpCVE 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.