CVE-2018-15727
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 64.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 64.28% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- grafana/grafana · redhat/ceph storage
- Source
- cve@mitre.org
EPSS moved from 55.4% on 21 September 2026 to 64.3% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/105184Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3829Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0019Third Party Advisory
- https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix/Patch, Vendor Advisory
- http://www.securityfocus.com/bid/105184Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3829Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0019Third Party Advisory
- https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix/Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.