CVE-2026-91997 evolution-api through 2.3.7 Prometheus Metrics IP Allowlist Bypass
Attackers can bypass IP whitelist restrictions to access sensitive metrics, disclosing server details and configuration information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-91997?
CVE-2026-91997 is a medium-severity authentication bypass vulnerability in evolution-foundation evolution-api, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-697
Which versions are affected by CVE-2026-91997?
How do I fix CVE-2026-91997?
No fix has been published for CVE-2026-91997 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-91997 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91997 exists.
Sources
Also known as GHSA-755x-c9g7-3hr7.