Security readout for executives and security teams
Plain-English summary
CVE-2026-28077 affects the WordPress Vapester theme from ThemeREX through version 1.1.10. A remote attacker may be able to make the site include local files improperly. The reported impact is high across confidentiality, integrity, and availability, but the attack complexity is rated high.
Executive priority
Prioritize assessment of public WordPress sites using Vapester. Treat confirmed vulnerable deployments as high priority because successful exploitation could expose files or affect site integrity, but urgency is moderated by high attack complexity and no cited active exploitation.
Technical view
The issue is CWE-98: improper control of a filename used in a PHP include/require statement. The CVE describes PHP Local File Inclusion in Vapester <= 1.1.10. CVSS 3.1 is 8.1 with network attack vector, no privileges, no user interaction, high complexity, and high C/I/A impact.
Likely exposure
Exposure is likely limited to WordPress sites using the ThemeREX Vapester theme at version 1.1.10 or earlier. Sites not using this theme are not indicated as affected by the provided sources.
Exploitation context
The CVE record and Patchstack entry describe the vulnerability, but the provided sources do not state active exploitation. It is not listed as KEV in the supplied bundle. Public exploit availability is not established here.
Researcher notes
The available detail is sparse. The CVE and Patchstack entry identify the affected theme and version range, CWE-98, and CVSS vector. The supplied sources do not provide exploit details, indicators, fixed-version information, or confirmed exploitation.
Mitigation direction
- Inventory WordPress sites for the Vapester theme and confirm exact version.
- Check ThemeREX and Patchstack guidance for a fixed version or vendor workaround.
- Update the theme if a vendor-supported patched version is available.
- Remove or disable the theme where it is not required.
- Monitor WordPress and web server logs for suspicious theme-related file access attempts.
Validation and detection
- Confirm whether Vapester is installed on each WordPress instance.
- Record installed Vapester versions and compare against <= 1.1.10.
- Review vendor and Patchstack advisories for remediation status.
- Check whether compensating controls block suspicious file inclusion attempts.
- Document unaffected systems where Vapester is absent.
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-2026-28077 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.