CVE-2018-15727

CRITICALNVD 9.89.8—Weaponized

9.8

Grafana 2.x, 3.x, and 4.x before 4.6.4 and 5.x before 5.2.3 allows authentication bypass because an attacker can generate a valid "remember me" cookie knowing only a username of an LDAP or OAuth user.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 99.1%
KEV: Not listed

Published

August 29, 2018

Last Modified

November 21, 2024

References (8)

cve@mitrehttp://www.securityfocus.com/bid/105184
cve@mitrehttps://access.redhat.com/errata/RHSA-2018:3829
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:0019
cve@mitrehttps://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix/
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/105184
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3829
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:0019
af854a3a-2127-422b-91ae-364da2661108https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix/

Patch Availability(2)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	grafana-0:5.2.4-1.el7cp	2019-01-03	redhat
redhat	tendrl-ui-0:1.6.3-14.el7rhgs	2018-12-17	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Go(1)

Package	Vulnerable range	Fixed in	Dependents
github.com/grafana/grafana	—	5.2.3+incompatible	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-287Improper Authentication

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 10× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 03:41 UTCEG score recompute
2026-05-28 03:41 UTCVendor advisory

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Metasploitauxiliary/admin/http/grafana_auth_bypass✓ verified
First seen Aug 14, 2019
Grafana 2.0 through 5.2.2 authentication bypass for LDAP and OAuth
Open source ↗
GitHub PoCu238/grafana-CVE-2018-15727
First seen Aug 29, 2018
a small utility to generate a cookie in order to exploit a grafana vulnerability (CVE-2018-15727)
Open source ↗

Frequently asked(5)

What is CVE-2018-15727?

CVE-2018-15727 is a critical vulnerability published on August 29, 2018. Grafana 2.x, 3.x, and 4.x before 4.6.4 and 5.x before 5.2.3 allows authentication bypass because an attacker can generate a valid "remember me" cookie knowing only a username of an LDAP or OAuth user.

When was CVE-2018-15727 disclosed?

CVE-2018-15727 was first published in the National Vulnerability Database on August 29, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-15727 actively exploited?

CVE-2018-15727 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-15727?

CVE-2018-15727 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-15727?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-15727, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-15727

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CVE-2018-15727

Published

Last Modified

References (8)

Patch Availability(2)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-15727?

Same vendor

Same CWE

CVE-2018-15727

📅 Published

🔄 Last Modified

🔗 References (8)

Patch Availability(2)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-15727?

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References (8)

Frequently asked(5)

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