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CVE-2018-15727

76
FAUCET Score

CVE-2018-15727 is a critical authentication bypass vulnerability affecting Grafana versions 2.x, 3.x, and 4.x before 4.6.4, and 5.x before 5.2.3, as well as Red Hat Ceph Storage and Grafana distributions. An attacker can generate a valid "remember me" cookie for LDAP or OAuth users, gaining unauthorized access. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating a network-exploitable flaw with low attack complexity, requiring no user interaction, and leading to complete compromise of confidentiality, integrity, and availability. Its high EPSS score and FAUCET Risk Score of 99/100 further emphasize its significant risk. While not listed on the CISA KEV catalog or currently active on the Hot List, exploit modules are available in Metasploit, confirming its exploitability. Despite this, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, <= 2.1.2CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
>= 3.0.0, <= 3.1.1CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.6.4CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
>= 5.0.0, < 5.2.3CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
64.28%
Probability of exploitation in next 30 days
EPSS Percentile
99.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Grafana 2.0 through 5.2.2 authentication bypass for LDAP and OAuth · Aug 14, 2019
This CVE's current EPSS score of 0.6428 is in the 97th percentile among its peer group of 36,833 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

No media coverage found for this CVE.

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 (13)

gopatch availablevia ghsa
Product: github.com/grafana/grafanaFixed in: 4.6.4
gopatch availablevia ghsa
Product: github.com/grafana/grafanaFixed in: 5.2.3
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 3.2Fixed in: grafana-0:5.2.4-1.el7cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.4 for RHEL 7Fixed in: grafana-0:4.6.4-1.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.4 for RHEL 7Fixed in: tendrl-ansible-0:1.6.3-10.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.4 for RHEL 7Fixed in: tendrl-api-0:1.6.3-8.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.4 for RHEL 7Fixed in: tendrl-gluster-integration-0:1.6.3-13.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.4 for RHEL 7Fixed in: tendrl-monitoring-integration-0:1.6.3-16.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.4 for RHEL 7Fixed in: tendrl-node-agent-0:1.6.3-11.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.4 for RHEL 7Fixed in: tendrl-ui-0:1.6.3-14.el7rhgs
View patch
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 2Fixed in: grafana
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty) Operational ToolsFixed in: grafana
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka) Operational ToolsFixed in: grafana

Vendor Advisories (2)

goGHSA-rgjg-66cx-5x9mcritical

Grafana Authentication Bypass

Feb 15, 2022
redhatCVE-2018-15727Moderate

grafana: authentication bypass knowing only a username of an LDAP or OAuth user

Aug 29, 2018

References

access.redhat.com / errata/RHSA-2018:3829
Third Party Advisory
access.redhat.com / errata/RHSA-2019:0019
Third Party Advisory
grafana.com / blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix
PatchVendor Advisory
securityfocus.com / bid/105184
Third Party AdvisoryVDB Entry