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CVE-2026-91997— evolution-api through 2.3.7 Prometheus Metrics IP Allowlist Bypass

Quick assessment

Affected
evolution-foundation evolution-api
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Evolution API 在 2.3.7 及以下版本中，其 中间件存在数组比较逻辑错误，导致比较结果始终为 false，从而允许未认证用户访问 端点。攻击者可以绕过 IP 白名单限制，获取敏感指标数据，包括服务器版本、数据库客户端名称、已配置的服务器 URL 以及 WhatsApp 实例详细信息。

CVSS 5.3 · Medium EPSS 0.34% · P27

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
evolution-foundation evolution-api ≤ 2.3.7 affected
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I. Basic Information for CVE-2026-91997

Vulnerability Information
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Vulnerability Title
evolution-api through 2.3.7 Prometheus Metrics IP Allowlist Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的比较
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
evolution-foundation evolution-api 0 ~ 2.3.7 -

II. Public POCs for CVE-2026-91997

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-91997

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Patches & Fixes for CVE-2026-91997 (1)

Vendor Advisories for CVE-2026-91997 (1)

Vendor Pages for CVE-2026-91997 (1)

Other References for CVE-2026-91997 (1)

IV. Related Vulnerabilities

Same weakness: CWE-697

V. Comments for CVE-2026-91997

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