CVE-2026-78280 HashThemes CVE debrief

Who should care

Defenders responsible for WordPress installations with the Hash Form plugin should assess exposure and prioritize remediation.

Why it matters

CVE-2026-78280 is a medium-severity Unauthenticated Cross Site Request Forgery (CSRF) vulnerability in Hash Form plugin versions <= 1.4.0. Defenders should assess exposure, prioritize remediation, and verify vendor-provided information.

• Defenders need to verify if their Hash Form plugin versions are vulnerable and prioritize patching or mitigation
• CSRF attacks could potentially lead to unauthorized actions on the plugin

Technical summary

The Hash Form plugin has a medium-severity Unauthenticated Cross Site Request Forgery (CSRF) vulnerability in versions <= 1.4.0. The vulnerability has a CVSS score of 4.3 and a CVSS severity of MEDIUM.

Defensive priority

Defenders should prioritize verifying affected versions and applying vendor-provided patches or mitigations.

Recommended defensive actions

• Verify if the Hash Form plugin version is <= 1.4.0 and update to a patched version if available
• Implement CSRF protections for the plugin
• Monitor for potential CSRF attacks

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine affected versions and potential impact.

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.