CVE-2026-75626 smicallef CVE debrief

Who should care

Defenders and security teams responsible for SpiderFoot installations should assess exposure and prioritize remediation to prevent potential exploitation. This includes verifying affected versions, ensuring proper output encoding, and reviewing configurations to prevent exploitation. Security teams should also monitor for potential exploitation attempts and update incident response plans accordingly.

Why it matters

CVE-2026-75626 is a critical vulnerability in SpiderFoot that allows attackers to inject malicious HTML elements with event handlers, potentially leading to API key theft or script execution in the operator's browser. Defenders should prioritize verifying and remediating this vulnerability, focusing on restricting input to trusted sources and ensuring proper output encoding.

• Potential theft of API keys through malicious HTML elements with event handlers
• Possible execution of scripts in the operator's browser when viewing correlations
• Required verification of affected versions and remediation steps
• Need for proper output encoding and input validation in SpiderFoot

Technical summary

SpiderFoot fails to HTML-escape correlation titles built from external scan data sources, allowing attackers to inject malicious HTML elements with event handlers that execute scripts in the operator's browser when the correlations view is opened. This could lead to potential API key theft or script execution. The vulnerability affects SpiderFoot installations, and defenders should prioritize verifying and remediating this vulnerability, focusing on restricting input to trusted sources and ensuring proper output encoding.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in SpiderFoot installations, focusing on restricting input to trusted sources and ensuring proper output encoding.

Recommended defensive actions

• Verify and remediate SpiderFoot installations to restrict input to trusted sources and ensure proper output encoding
• Review and update SpiderFoot configurations to prevent exploitation
• Monitor for potential exploitation attempts and update incident response plans accordingly
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional verification is needed to confirm affected versions and remediation steps. The vulnerability allows attackers to inject malicious HTML elements with event handlers into correlation results that execute scripts in the operator's browser when the correlations view is opened, potentially stealing API keys. Evidence limits suggest verifying affected SpiderFoot installations and ensuring proper output encoding.

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.