CVE-2023-3128

Grafana vulnerability

CVSS

9.4

EPSS

4.0%

EPSS pct

89th

Exploited

No known

Grafana is validating Azure AD accounts based on the email claim. On Azure AD, the profile email field is not unique and can be easily modified. This leads to account takeover and authentication bypass when Azure AD OAuth is configured with a multi-tenant app.

Affected vendor

Grafana

Affected product

Grafana

CVSS vector

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

Weakness type (CWE)

CWE-290 — Authentication Bypass by Spoofing

Published

2023-06-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, low impact to availability.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2023-3128

Confirm whether Grafana Grafana is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2023-3128.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-3128

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2023-3128 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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