Security readout for executives and security teams
Plain-English summary
CVE-2026-27987 affects the WordPress theme The Qlean by ThemeREX through version 2.12. A vulnerable site may allow an unauthenticated internet attacker to include local server files through PHP include/require handling. The published score is high because confidentiality, integrity, and availability could all be impacted.
Executive priority
Prioritize identification of affected public WordPress sites this week. Treat confirmed exposure as high risk, especially for externally facing marketing or commerce sites, but do not assume active exploitation without further evidence.
Technical view
The record describes CWE-98 improper filename control in a PHP include/require statement, resulting in PHP local file inclusion in The Qlean theme <=2.12. CVSS 3.1 is 8.1: network-accessible, high complexity, no privileges, no user interaction, unchanged scope, high CIA impact.
Likely exposure
Exposure is limited to WordPress sites using ThemeREX The Qlean theme versions through 2.12. The source bundle does not identify specific vulnerable endpoints, default configurations, or hosting conditions needed for exploitation.
Exploitation context
The CVE is not listed as KEV in the provided data, and no cited source states active exploitation. The CVSS vector indicates remote unauthenticated exploitation is possible but high complexity, suggesting exploitation may require specific conditions.
Researcher notes
Evidence is sparse. The description labels CWE-98 remote file inclusion but explicitly says local file inclusion. No patch version, exploit details, or affected code path is provided in the source bundle. Validate against vendor advisories before drawing conclusions.
Mitigation direction
- Inventory WordPress sites for The Qlean theme and installed version.
- If version is <=2.12, check ThemeREX and Patchstack guidance immediately.
- If no safe update is available, consider disabling or replacing the theme after business review.
- Restrict administrative access and monitor web logs for unusual file-include related errors.
Validation and detection
- Confirm whether The Qlean theme is installed on each WordPress site.
- Record the theme version and compare it to <=2.12.
- Review vendor and Patchstack pages for updated remediation status.
- Check security monitoring for anomalous requests and PHP include-related warnings.
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
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ATT&CK lookup starting points
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CWE-98: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-27987 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
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 Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.