Security readout for executives and security teams
Plain-English summary
CVE-2026-1886 affects the Go Night Pro WordPress Dark Mode Plugin through version 1.1.0. A logged-in user with Contributor-level access or higher could store malicious script in content using the plugin shortcode. That script may run when others view the affected page, creating risk to site users and administrators.
Executive priority
Treat as a moderate-priority web application issue. Prioritize sites with many content contributors, external authors, or administrator traffic to contributor-created pages. If the plugin is unused, removal is the quickest risk reduction.
Technical view
The issue is stored cross-site scripting in the `go-night-pro-shortcode` shortcode `margin` attribute, caused by insufficient input sanitization and output escaping. It is classified as CWE-79 with CVSS 3.1 score 6.4, requiring low-privileged authenticated access and impacting confidentiality and integrity.
Likely exposure
Exposure is limited to WordPress sites using Go Night Pro through 1.1.0, especially where Contributor or higher accounts are available to untrusted users. Public anonymous exploitation is not indicated by the provided sources.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. Abuse requires an authenticated WordPress account with content creation capability. Stored XSS can affect later visitors to the injected page, including privileged users.
Researcher notes
The public record names versions up to and including 1.1.0 and points to shortcode rendering code in WordPress Trac. The provided sources do not name a fixed version, patch commit, or exploitation in the wild, so remediation should follow current vendor guidance.
Mitigation direction
- Check vendor or WordPress plugin guidance for a fixed version or official workaround.
- Update the plugin if a patched release is available from official sources.
- Disable or remove the plugin if it is not business-critical.
- Restrict Contributor and higher roles to trusted users only.
- Review existing shortcode usage for unexpected or untrusted attributes.
Validation and detection
- Inventory WordPress sites for Go Night Pro plugin installations.
- Confirm whether installed versions are 1.1.0 or earlier.
- Identify users with Contributor, Author, Editor, or Administrator roles.
- Review pages and posts using the affected shortcode.
- Check security logs for suspicious content edits by low-privileged 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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
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-2026-1886 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
- 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/4a75444e-b1e4-41e0-9209-07ded65c1498?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/go-night-pro/trunk/admin/partials/shortcode/go-night-shortcode-display.php#L48CVE reference
- https://plugins.trac.wordpress.org/browser/go-night-pro/tags/1.1.0/admin/partials/shortcode/go-night-shortcode-display.php#L48CVE 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.