# CVE-2026-91997

## Summary

- **CVE ID:** CVE-2026-91997
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-697
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

evolution-api through 2.3.7 contains an incorrect array comparison in the metricsIPWhitelist middleware that always evaluates to false, allowing unauthenticated access to the /metrics endpoint. Attackers can bypass IP whitelist restrictions to access sensitive metrics disclosing server version, database client name, configured server URL, and WhatsApp instance details.

## Affected Products

- evolution-foundation — evolution-api (0)

## References

- [CNA](https://github.com/evolution-foundation/evolution-api)
- [CNA](https://github.com/geo-chen/oss/blob/main/evolution-api.md)
- [CNA](https://github.com/evolution-foundation/evolution-api/blob/2.3.7/src/api/routes/index.router.ts#L49-L65)
- [CNA](https://www.vulncheck.com/advisories/evolution-api-through-2.3.7-prometheus-metrics-ip-allowlist-bypass)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 26.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._