CVE-2026-91997

medium

evolution-api through 2.3.7 contains an incorrect array comparison in the metricsIPWhitelist middleware that always evaluates to false, allowing unauthenticate…

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.

CVSS

5.3

5.3 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-09-15 12:17

Modified: 2026-09-24 20:43

NVD status: Deferred

Last synced 1 day ago

Verified against the source API 2026-10-27 06:53 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-697

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/evolution-foundation/evolution-api disclosure@vulncheck.com
https://github.com/evolution-foundation/evolution-api/blob/2.3.7/src/api/routes/index.rout... disclosure@vulncheck.com
https://github.com/geo-chen/oss/blob/main/evolution-api.md disclosure@vulncheck.com
https://www.vulncheck.com/advisories/evolution-api-through-2.3.7-prometheus-metrics-ip-all... disclosure@vulncheck.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗

Learn the basics

Understanding CVEs and CVSS Scores