CVE-2026-93937 ThemeREX Group CVE debrief

Who should care

Defenders responsible for WordPress installations using the Hygia theme, especially those with versions up to and including 1.21.0, should assess exposure and prioritize patching or mitigation.

Why it matters

CVE-2026-93937 is a critical vulnerability in the WordPress Hygia theme that allows for PHP Object Injection. Defenders should prioritize patching or mitigating this vulnerability as it could lead to high impacts on confidentiality, integrity, and availability. The vulnerability is exploitable over the network with low attack complexity and requires no user interaction or privileges. Evidence from the CVE record and source item supports this assessment, but further verification is recommended.

• Potential high impact on confidentiality due to possible data exposure.
• Potential high impact on integrity due to possible data tampering.
• Potential high impact on availability due to possible service disruption.
• Verification of patch deployment and monitoring for suspicious activity are recommended.

Technical summary

The WordPress Hygia theme, versions up to and including 1.21.0, is vulnerable to PHP Object Injection due to deserialization of untrusted data. This vulnerability has a CVSS score of 9.8 and can be exploited over the network with low attack complexity, requiring no user interaction or privileges.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability as it could lead to high impacts on confidentiality, integrity, and availability.

Recommended defensive actions

• Patch or update the WordPress Hygia theme to a version beyond 1.21.0.
• Implement additional security measures to prevent object injection attacks, such as validating and sanitizing user input.
• Monitor systems for suspicious activity related to the Hygia theme.

Evidence notes

The CVE record and source item provide details about the vulnerability in the WordPress Hygia theme. The NVD entry is currently not available. Evidence from the CVE record supports the assessment of CVE-2026-93937 as a critical vulnerability. Further verification is recommended. Defenders should verify patch deployment and monitor for suspicious activity. The source item provides additional context on the vulnerability. Limited source detail is available; explicit evidence-limit and

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.