CVE-2026-91997

EUVD-2026-78437
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/evolution-foundation/evolution-api
https://github.com/evolution-foundation/evolution-api/blob/2.3.7/src/api/routes/index.router.ts#L49-L65
https://github.com/geo-chen/oss/blob/main/evolution-api.md
https://www.vulncheck.com/advisories/evolution-api-through-2.3.7-prometheus-metrics-ip-allowlist-bypass