Security readout for executives and security teams
Plain-English summary
This WordPress plugin flaw lets an attacker abuse a logged-in administrator’s browser to trigger bulk image optimization. It does not provide direct login, data theft, or server takeover in the supplied sources, but it can cause unauthorized site changes if an administrator is tricked into taking an action.
Executive priority
Handle during normal vulnerability management, with faster action for public WordPress sites or sites with many administrators. This is not a crisis-level issue in the supplied evidence, but leaving old plugins active increases preventable operational risk.
Technical view
CVE-2020-36750 is a CWE-352 CSRF issue in EWWW Image Optimizer up to and including 5.8.1. The source bundle identifies missing or incorrect nonce validation in ewww_ngg_bulk_init(), allowing forged requests to initiate bulk optimization when an administrator interacts with attacker-controlled content.
Likely exposure
Exposure is limited to WordPress sites running EWWW Image Optimizer versions up to 5.8.1, especially where administrators are logged in during normal browsing. The bundle does not identify broader affected products beyond this plugin.
Exploitation context
The attack requires user interaction from a site administrator. The bundle says unauthenticated attackers can trigger the action only if they trick an administrator into performing an action such as clicking a link. KEV is false, and no supplied source confirms active exploitation.
Researcher notes
The supplied evidence supports CSRF with low integrity impact and administrator interaction requirements. Do not treat this as confirmed remote code execution or active exploitation. The affected-version statement is clear, but the bundle does not provide detailed exploit telemetry.
Mitigation direction
- Inventory WordPress sites for EWWW Image Optimizer installations.
- Update affected installations to a vendor-supported version newer than 5.8.1.
- Review vendor and WordPress plugin guidance for the exact fixed release.
- Warn administrators against clicking unsolicited links while logged into WordPress.
- Monitor for unexpected bulk image optimization activity.
Validation and detection
- Confirm each WordPress site’s EWWW Image Optimizer version.
- Flag versions up to and including 5.8.1 as affected.
- Check whether ewww_ngg_bulk_init() includes proper nonce validation.
- Review WordPress activity logs for unexpected bulk optimization events.
- Verify remediation by rechecking plugin version after update.
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-2020-36750 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/8ef33e3c-187a-45d9-9dac-0895dce34216?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/2417429/ewww-image-optimizer/trunk/classes/class-ewww-nextgen.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.