Security readout for executives and security teams
Plain-English summary
CVE-2026-22399 affects the WordPress Holmes theme by Mikado-Themes, versions through 1.7. A remote unauthenticated attacker may be able to abuse unsafe PHP file inclusion handling to read or impact files on the site. The CVSS score is high, but exploitation is rated high complexity. No public source here confirms active exploitation.
Executive priority
Prioritize review of public WordPress sites using the Holmes theme. This is high severity with potential major site impact, but current sources do not confirm active exploitation. If the theme is present at version 1.7 or earlier, move quickly to vendor guidance, patching, or temporary removal.
Technical view
The issue is CWE-98: improper control of a filename used in PHP include/require logic, resulting in local file inclusion in the Holmes WordPress theme <= 1.7. The CVSS 3.1 vector is AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating network reachability, no authentication, no user interaction, high complexity, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites with the Mikado-Themes Holmes theme installed at version 1.7 or earlier. The source bundle does not identify affected plugins, other themes, or hosting platforms. Sites not using this theme are not indicated as affected.
Exploitation context
The CVE and Patchstack entry describe a local file inclusion vulnerability. The bundle does not provide exploit details, proof of active exploitation, or CISA KEV listing. Treat internet-facing affected WordPress sites as higher priority because the vulnerability is network reachable and unauthenticated, despite high attack complexity.
Researcher notes
Evidence is limited to the CVE metadata and Patchstack database reference. The affected range is described as Holmes through <= 1.7, while the structured affected entry is sparse. Do not assume a fixed version from the provided sources. No exploit status, indicators, or vendor advisory details are included in the bundle.
Mitigation direction
- Inventory WordPress sites for the Holmes theme and installed version.
- If Holmes <= 1.7 is present, check vendor and Patchstack guidance immediately.
- Apply any vendor-provided fixed theme version when available.
- If no fix is available, disable or replace the affected theme.
- Back up the site before theme changes or updates.
Validation and detection
- Confirm whether the Holmes theme is installed on each WordPress site.
- Record the exact Holmes theme version from trusted administrative sources.
- Compare findings against the CVE and Patchstack affected range.
- Review web logs for unusual requests targeting theme file inclusion behavior.
- Verify remediation by confirming the theme is updated, disabled, or removed.
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-2026-22399 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.