CVE-2023-3128

FAUCET Score

CVE-2023-3128 is a critical authentication bypass vulnerability affecting Grafana when configured with Azure AD OAuth using a multi-tenant application. It arises because Grafana validates Azure AD accounts based on the easily modifiable and non-unique email claim, allowing for account takeover. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code, the vulnerability has garnered significant community discussion and media coverage, indicating high awareness.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 6.7.0, < 8.5.27CPE matchmatch criteria	cpe:2.3:a:grafana:grafana:::::-:::*
		>= 6.7.0, < 8.5.27CPE matchmatch criteria	cpe:2.3:a:grafana:grafana:::::enterprise:::*
		>= 9.2.0, < 9.2.20CPE matchmatch criteria	cpe:2.3:a:grafana:grafana:::::-:::*
		>= 9.2.0, < 9.2.20CPE matchmatch criteria	cpe:2.3:a:grafana:grafana:::::enterprise:::*
		>= 9.3.0, < 9.3.16CPE matchmatch criteria	cpe:2.3:a:grafana:grafana:::::-:::*

CVSS Data

CVSS version used by this source: 3.1

9.4CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

LOW

Exploitability Score

3.9

Impact Score

5.5

CvssVersion

3.1

Exploit Intelligence

EPSS Score

4.00%

Probability of exploitation in next 30 days

EPSS Percentile

89.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0399 is in the 82nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (14)

gopatch availablevia ghsa

Product: github.com/grafana/grafanaFixed in: 9.4.13

gopatch availablevia ghsa

Product: github.com/grafana/grafanaFixed in: 9.3.16

gopatch availablevia ghsa

Product: github.com/grafana/grafanaFixed in: 9.2.20

gopatch availablevia ghsa

Product: github.com/grafana/grafanaFixed in: 8.5.27

nodejspatch availablevia llm_extracted

View patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: grafana-0:9.0.9-3.el9_2

View patch

redhatpatch availablevia redhat_api

Product: Red Hat Ceph Storage 7.1Fixed in: ceph-2:18.2.1-194.el8cp

View patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: grafana-0:9.2.10-7.el8_9

View patch

apollographqlvendor investigatingvia llm_extracted

View patch

chainsafevendor investigatingvia llm_extracted

View patch

github_advisoryvendor investigatingvia nvd_reference

View patch

jenkinsvendor investigatingvia llm_extracted

View patch

kenticovendor investigatingvia llm_extracted

View patch

zimbravendor investigatingvia llm_extracted

View patch

Vendor Advisories (8)

goGHSA-mpv3-g8m3-3fjccritical

Grafana vulnerable to Authentication Bypass by Spoofing

Jun 22, 2023

redhatCVE-2023-3128Moderate

grafana: account takeover possible when using Azure AD OAuth

Jun 22, 2023

zimbrallm-zimbra-2822e7f5b13ba522CRITICAL