Security readout for executives and security teams
Plain-English summary
CVE-2026-23542 affects the WordPress Grand Restaurant theme from ThemeGoods, versions up to 7.0.10. It is rated critical because a remote, unauthenticated attacker may be able to abuse unsafe data deserialization to compromise confidentiality, integrity, and availability. No provided source confirms active exploitation.
Executive priority
Treat as an urgent WordPress exposure review. The impact rating is critical and does not require attacker credentials, but available sources do not prove exploitation in the wild. Prioritize customer-facing or revenue-critical restaurant sites first.
Technical view
The issue is CWE-502 deserialization of untrusted data leading to PHP object injection in the Grand Restaurant WordPress theme through version 7.0.10. The CVSS 3.1 score is 9.8 with network attack vector, low complexity, no privileges, and no user interaction required.
Likely exposure
Exposure is likely limited to WordPress sites that have the ThemeGoods Grand Restaurant theme installed at version 7.0.10 or earlier. The source bundle does not identify affected plugins, hosting platforms, or other ThemeGoods products.
Exploitation context
The CVSS vector indicates the vulnerability is remotely reachable and unauthenticated. However, the provided sources do not include exploit details, proof-of-concept status, observed attacks, or CISA KEV listing. Treat as high urgency without claiming active exploitation.
Researcher notes
Public data identifies the bug class and affected version range but does not provide a patch version, sink/source detail, gadget chain, exploitability constraints, or exploitation evidence. Avoid assuming compromise solely from installation; validate exposure and monitor vendor updates.
Mitigation direction
- Inventory WordPress sites for the Grand Restaurant theme and its version.
- Prioritize sites running Grand Restaurant version 7.0.10 or earlier.
- Check ThemeGoods and Patchstack for official update or mitigation guidance.
- If no safe update is available, consider removing or disabling the theme where feasible.
- Increase monitoring for suspicious WordPress requests and unexpected file or configuration changes.
Validation and detection
- Confirm whether Grand Restaurant is installed on each WordPress instance.
- Record the installed theme version and compare against <= 7.0.10.
- Review vendor or Patchstack advisories for patched-version information.
- Verify remediation by rescanning theme inventory after update, removal, or disablement.
- Check security logs for unusual unauthenticated requests to affected sites.
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-2026-23542 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.