Security readout for executives and security teams
Plain-English summary
CVE-2026-28105 is a critical vulnerability in the WordPress Good Energy theme by ThemeREX. Sites running versions up to 1.7.7 may be exposed to PHP object injection through unsafe deserialization. The published score indicates possible full confidentiality, integrity, and availability impact. No source provided confirms active exploitation.
Executive priority
Treat this as urgent for any public WordPress site using Good Energy. Prioritize inventory and remediation because the severity is critical and exploitation may not require authentication. Do not assume compromise without evidence; focus first on finding affected sites and applying vendor guidance.
Technical view
The issue is CWE-502, Deserialization of Untrusted Data, in the Good Energy theme package. The CVSS 3.1 vector is 9.8, network-accessible, low complexity, no privileges, and no user interaction. Public data identifies affected versions as Good Energy through 1.7.7. Available sources do not describe a patch version, proof of concept, or exploit chain.
Likely exposure
Exposure is limited to WordPress installations using the ThemeREX Good Energy theme at version 1.7.7 or earlier. Sites not using this theme are not indicated as affected by the provided sources.
Exploitation context
The CVSS vector suggests remote unauthenticated exploitation may be possible if a vulnerable code path is reachable. However, the supplied sources do not confirm exploitation in the wild, KEV listing, public exploit availability, or required gadget chains.
Researcher notes
The public record is sparse. It identifies CWE-502 object injection and a critical CVSS vector, but not the vulnerable endpoint, serialization sink, patch commit, or exploit prerequisites. Avoid assuming exploitability beyond the CVSS and vendor database statements.
Mitigation direction
- Identify all WordPress sites using the Good Energy theme.
- Check ThemeREX and Patchstack guidance for a fixed version or official workaround.
- Update the theme if a vendor-approved fixed release is available.
- If no fix is available, consider disabling or replacing the theme.
- Restrict administrative access and maintain current WordPress, plugins, and themes.
Validation and detection
- Confirm the installed Good Energy theme version on each WordPress site.
- Flag versions 1.7.7 and earlier as potentially vulnerable.
- Review vendor and Patchstack pages for updated remediation details.
- Check asset inventories for unmanaged or legacy WordPress instances.
- Monitor logs for unusual requests targeting theme functionality.
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-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. 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-2026-28105 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/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:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/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.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.