Security readout for executives and security teams
Plain-English summary
CVE-2026-28095 affects the ThemeREX Marcell WordPress theme through version 1.2.14. It is a local file inclusion issue that could let an unauthenticated attacker make the site include unintended local files. The CVSS rating is high, but attack complexity is marked high. No active exploitation is indicated in the provided sources.
Executive priority
Treat this as a high-priority WordPress exposure for sites using the Marcell theme. The business urgency is strongest for public websites handling sensitive data or supporting revenue operations. Do not assume compromise from the CVE alone; validate theme presence and version first.
Technical view
The CVE describes improper filename control in a PHP include/require path, classified as CWE-98. Affected software is ThemeREX Marcell for WordPress through 1.2.14. The CVSS v3.1 vector is AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating remote unauthenticated attack potential with high impact if successfully exploited.
Likely exposure
Exposure is most likely on internet-facing WordPress sites running the Marcell theme version 1.2.14 or earlier. Sites not using this theme are not indicated as affected by the provided sources.
Exploitation context
The vulnerability is remotely reachable and does not require authentication or user interaction, but CVSS marks attack complexity as high. The sources do not report public exploitation, and the CVE is not listed as KEV in the provided bundle.
Researcher notes
Evidence is limited to the CVE record and Patchstack database reference. The bundle identifies affected versions through 1.2.14 but does not provide a named fixed version or detailed exploit conditions. Avoid inferring broader ThemeREX product impact without additional vendor confirmation.
Mitigation direction
- Inventory WordPress sites for the Marcell theme and record installed versions.
- Prioritize sites running Marcell 1.2.14 or earlier for remediation review.
- Check ThemeREX and Patchstack guidance for an updated fixed version or vendor workaround.
- If no fix is available, consider disabling or replacing the theme.
- Use WAF or virtual patching controls where available as interim risk reduction.
Validation and detection
- Confirm whether the active or installed theme is Marcell.
- Verify the Marcell version on each WordPress instance.
- Review web logs for unusual file inclusion-related requests.
- Confirm remediation status against current vendor or Patchstack guidance.
- Track KEV and vendor advisories for any change in exploitation status.
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-98: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2026-28095 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
- 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.