Security readout for executives and security teams
Plain-English summary
CVE-2026-1804 affects the WDES Responsive Popup WordPress plugin through version 1.3.6. A logged-in user with Contributor-level access or higher could save malicious script in popup shortcode content. That script could run when others view the affected page, creating risk to site users and administrators.
Executive priority
Treat as a medium-priority website security issue. It is not reported as actively exploited, but it can affect site visitors and administrators if lower-privileged accounts are abused. Prioritize sites allowing many contributors or third-party content editors.
Technical view
The flaw is stored cross-site scripting in the plugin’s wdes-popup-title shortcode attribute handling. Sources attribute it to insufficient input sanitization and output escaping. CVSS is 6.4, network-accessible, low complexity, requiring low privileges, with changed scope and low confidentiality and integrity impact.
Likely exposure
Exposure is limited to WordPress sites running WDES Responsive Popup up to and including 1.3.6 where untrusted or lower-privileged users can create or edit content using the vulnerable shortcode.
Exploitation context
The source bundle does not show CISA KEV listing or public active exploitation. Exploitation requires authenticated Contributor-level access or higher, but no user interaction is needed after the malicious content is stored and later viewed.
Researcher notes
Evidence points to shortcode attribute handling in wdes-popup.php and title.php in tag 1.3.6. The bundle does not provide a confirmed patched version. Avoid assuming remediation beyond vendor guidance, access control, disabling, or content review.
Mitigation direction
- Identify WordPress sites using WDES Responsive Popup version 1.3.6 or earlier.
- Check Wordfence and plugin vendor guidance for a fixed version or official remediation.
- Disable or remove the plugin if it is not required.
- Restrict Contributor-level and higher access to trusted users only.
- Review existing posts and pages using the affected popup title shortcode.
Validation and detection
- Inventory installed WordPress plugins and confirm WDES Responsive Popup version.
- Review roles able to create or edit posts using shortcodes.
- Inspect existing content for unexpected wdes-popup-title shortcode attributes.
- Confirm whether vendor guidance or an updated plugin version is available.
- Monitor WordPress security logs for suspicious edits by Contributor-level users.
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
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CWE-79: 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-2026-1804 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3afdffa7-23ec-41ea-b05a-152a69b7ce50?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/wdes-responsive-popup/tags/1.3.6/wdes-popup.php#L111CVE reference
- https://plugins.trac.wordpress.org/browser/wdes-responsive-popup/tags/1.3.6/lib/view/title.php#L77CVE 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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.