CVE-2026-86817 Five Star Business Profile and Schema CVE debrief

Who should care

Defenders responsible for WordPress installations with the Five Star Business Profile and Schema plugin should assess exposure and prioritize remediation. This includes operators, platform administrators, vulnerability management teams, and security teams who manage WordPress installations.

Why it matters

CVE-2026-86817 allows authenticated users to disclose sensitive data in public output, requiring defenders to verify and remediate the vulnerability in their WordPress installations.

• Disclosure of sensitive data, including other users' password hashes.
• Disclosure of arbitrary site option values.
• Potential for unauthorized access to sensitive data.

Technical summary

The Five Star Business Profile and Schema WordPress plugin before 2.4.0 does not properly restrict the callbacks used to resolve schema field default values, allowing authenticated users with Author-level access and above to store input that discloses sensitive data, including other users' password hashes and arbitrary site option values. This vulnerability affects WordPress installations with the Five Star Business Profile and Schema plugin installed. Defenders should prioritize verifying and remediating this vulnerability in their WordPress installations.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in their WordPress installations, especially if they have the Five Star Business Profile and Schema plugin installed.

Recommended defensive actions

• Verify the version of the Five Star Business Profile and Schema WordPress plugin and update to 2.4.0 or later if necessary.
• Restrict access to sensitive data and monitor for potential exploitation.
• Implement additional security measures to prevent unauthorized access to sensitive data.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability, but indicate that it allows authenticated users to disclose sensitive data. Defenders should verify the plugin version and update to 2.4.0 or later if necessary. The vulnerability affects WordPress installations with the Five Star Business Profile and Schema plugin. Evidence is limited, and defenders should exercise caution when verifying and remediating the vulnerability.

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.