Security readout for executives and security teams
Plain-English summary
CVE-2026-2027 is a stored cross-site scripting issue in the WordPress AMP Enhancer plugin through version 1.0.49. It requires an authenticated administrator-level user, limiting typical attacker reach. Impact is mainly on WordPress multisite or sites where unfiltered_html is disabled, where malicious scripts could run for visitors of affected pages.
Executive priority
Treat as a targeted, moderate-risk WordPress issue. It is not broadly exploitable without administrator access, but affected multisite environments should prioritize review because stored scripts can impact visitors and site trust if an admin account is misused.
Technical view
The issue is CWE-79 stored XSS in AMP Enhancer’s AMP Custom CSS setting, caused by insufficient input sanitization and output escaping. CVSS v3.1 is 4.4 with high privileges and high attack complexity. The source states it affects versions up to and including 1.0.49, only in multisite or unfiltered_html-disabled installations.
Likely exposure
Exposure is limited to WordPress environments using AMP Enhancer version 1.0.49 or earlier, especially multisite deployments or configurations disabling unfiltered_html. Sites without this plugin, or not matching those configurations, are unlikely to be affected based on the provided sources.
Exploitation context
No active exploitation is stated in the provided sources, and the CVE is not marked KEV. Exploitation requires administrator-level access, so this is most relevant to compromised admin accounts, malicious insiders, or environments with delegated site administration.
Researcher notes
The record contains some affected-product metadata ambiguity, but the vulnerability description clearly states versions up to 1.0.49. Public references include Wordfence and WordPress Trac source locations for the custom CSS handler. No fixed version is named in the provided bundle.
Mitigation direction
- Check vendor and WordPress plugin guidance for a fixed AMP Enhancer release.
- Update AMP Enhancer if a vendor-fixed version is available.
- Restrict administrator access to trusted users only.
- Review multisite administrator delegation and least-privilege controls.
- Disable the plugin if business risk is unacceptable pending vendor guidance.
Validation and detection
- Inventory WordPress sites running AMP Enhancer.
- Confirm installed AMP Enhancer versions are above 1.0.49 if fixes exist.
- Identify multisite installations and sites with unfiltered_html disabled.
- Review AMP Custom CSS settings for unexpected script-like content.
- Monitor administrative changes to plugin settings.
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-2026-2027 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
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/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:H/PR:H/UI:N/S:C/C:L/I:L/A:N1.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:N/AC:H/PR:H/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/14014260-e872-48d8-8788-f89dbeec2080?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/amp-enhancer/trunk/admin/amp-enhancer-custom-css/amp-enhancer-custom-css.php#L13CVE reference
- https://plugins.trac.wordpress.org/browser/amp-enhancer/tags/1.0.49/admin/amp-enhancer-custom-css/amp-enhancer-custom-css.php#L13CVE reference
- https://gist.github.com/indonumberone/b373b970da88e87a218aed58d92ccfb2CVE 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.