Sigma Watch is free and independent. If it saves you time, keep it running. ☕ Buy me a coffee
SigmaWatch
CVE coverage

CVE-2026-91997

CVSS 5.3 no coverage
View on NVD →
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.

Detection rules

No detection found — yet
None of Sigma, Elastic, Splunk ESCU, YARA, Microsoft Sentinel, Snort, or Suricata currently has a rule referencing CVE-2026-91997.