CVE-2026-91997

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 38.8% of scored records. A rank, not a probability.

NVD base score

6.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-24.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-15 11:35Z1 MO AGO

Last updated

2026-09-24 14:22Z1 MO AGO

Reserved

2026-09-15

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-697Incorrect ComparisonPillar

Data version

5.2

Document digest

9778005f593b050c1e88b4b7bf175781eabfa6c35fe0a4540c7c1ef3c78e6c56

• github.comResearcher write-uphttps://github.com/geo-chen/oss/blob/main/evolution-api.mdthird-party-advisoryexploit
• github.commetricsIPWhitelist middleware at 2.3.7https://github.com/evolution-foundation/evolution-api/blob/2.3.7/src/api/routes/index.router.ts#L49-L65technical-description
• github.comhttps://github.com/evolution-foundation/evolution-apiproduct
• www.vulncheck.comVulnCheck Advisory: evolution-api through 2.3.7 Prometheus Metrics IP Allowlist Bypasshttps://www.vulncheck.com/advisories/evolution-api-through-2.3.7-prometheus-metrics-ip-allowlist-bypassthird-party-advisory