CVE-2026-92804 NangoHQ CVE debrief

Who should care

Defenders responsible for Nango instances, especially those with authenticated user access, should assess exposure and prioritize remediation. This includes reviewing Nango configurations for malicious values, remediating vulnerable instances, and monitoring for suspicious server requests. Security teams should also track exceptions and retest remediated assets to ensure the vulnerability is properly addressed.

Why it matters

CVE-2026-92804 allows authenticated attackers to supply malicious configuration values in Nango through 0.70.4, potentially leading to exfiltration of provider credentials and server requests at internal addresses or cloud metadata endpoints. Defenders should prioritize verifying and remediating Nango configurations, especially for authenticated users.

• Potential exfiltration of provider credentials
• Server requests at internal addresses or cloud metadata endpoints
• Verification of Nango configurations for malicious values
• Remediation of vulnerable Nango instances

Technical summary

Nango through 0.70.4 fails to validate caller-supplied connection configuration values, allowing authenticated attackers to direct server requests at internal addresses or cloud metadata endpoints. This vulnerability is a result of the failure to properly validate configuration values interpolated into provider token and proxy URL templates. The technical impact includes potential exfiltration of provider credentials and unauthorized server requests. Defenders should prioritize verifying and remediating Nango configurations, especially for authenticated users.

Defensive priority

Defenders should prioritize verifying and remediating Nango configurations, especially for authenticated users.

Recommended defensive actions

• Verify Nango configurations for malicious values
• Remediate vulnerable Nango instances
• Monitor for suspicious server requests
• Review compensating controls for exposed systems
• Check relevant monitoring, detection, and logs for exposed assets
• Track exceptions and retest remediated assets
• 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 details on the vulnerability in Nango through 0.70.4, which allows authenticated attackers to supply malicious configuration values. The vulnerability is grounded in the failure to validate caller-supplied connection configuration values interpolated into provider token and proxy URL templates. Evidence limits suggest that defenders should verify Nango configurations for malicious values and remediate vulnerable instances. Known affected scope includes Nango instances with authenticated user access

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.