evolution-api through 2.3.7 Prometheus Metrics IP Allowlist Bypass (CVE-2026-91997) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-91997

evolution-api through 2.3.7 Prometheus Metrics IP Allowlist Bypass

Answer in brief

CVE-2026-91997 records a Unknown severity vulnerability in evolution-api through 2.3.7 Prometheus Metrics IP Allowlist Bypass. The current sources do not mark it as known exploited. The current feed maps evolution-foundation/evolution-api (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 15, 2026Source checked Sep 15, 2026First seen by HOL Sep 15, 2026Material review Sep 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps evolution-foundation/evolution-api (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
evolution-foundation/evolution-apigeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for evolution-foundation/evolution-api.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 15, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.