grafana: authentication bypass knowing only a username of an LDAP or OAuth user
Published Aug 29, 2018
9.8
CRITICALCVSS 3.0
EPSS 64.28%
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.
Affected products
No data.
No data.
Red Hat Ceph Storage 3.2
grafana-0:5.2.4-1.el7cp
Fixed · RHSA-2019:0019
Red Hat Gluster Storage 3.4 for RHEL 7
grafana-0:4.6.4-1.el7rhgs
Fixed · RHSA-2018:3829
Red Hat Gluster Storage 3.4 for RHEL 7
tendrl-ansible-0:1.6.3-10.el7rhgs
Fixed · RHSA-2018:3829
Red Hat Gluster Storage 3.4 for RHEL 7
tendrl-api-0:1.6.3-8.el7rhgs
Fixed · RHSA-2018:3829
Red Hat Gluster Storage 3.4 for RHEL 7
tendrl-gluster-integration-0:1.6.3-13.el7rhgs
Fixed · RHSA-2018:3829
Red Hat Gluster Storage 3.4 for RHEL 7
tendrl-monitoring-integration-0:1.6.3-16.el7rhgs
Fixed · RHSA-2018:3829
Red Hat Gluster Storage 3.4 for RHEL 7
tendrl-node-agent-0:1.6.3-11.el7rhgs
Fixed · RHSA-2018:3829
Red Hat Gluster Storage 3.4 for RHEL 7
tendrl-ui-0:1.6.3-14.el7rhgs
Fixed · RHSA-2018:3829
Red Hat Ceph Storage 2
grafana
Will not fix
Red Hat OpenStack Platform 8 (Liberty) Operational Tools
grafana
Will not fix
Red Hat OpenStack Platform 9 (Mitaka) Operational Tools
grafana
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Ceph Storage 3.2 | grafana-0:5.2.4-1.el7cp | Fixed | RHSA-2019:0019 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | grafana-0:4.6.4-1.el7rhgs | Fixed | RHSA-2018:3829 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | tendrl-ansible-0:1.6.3-10.el7rhgs | Fixed | RHSA-2018:3829 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | tendrl-api-0:1.6.3-8.el7rhgs | Fixed | RHSA-2018:3829 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | tendrl-gluster-integration-0:1.6.3-13.el7rhgs | Fixed | RHSA-2018:3829 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | tendrl-monitoring-integration-0:1.6.3-16.el7rhgs | Fixed | RHSA-2018:3829 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | tendrl-node-agent-0:1.6.3-11.el7rhgs | Fixed | RHSA-2018:3829 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | tendrl-ui-0:1.6.3-14.el7rhgs | Fixed | RHSA-2018:3829 |
| Red Hat Ceph Storage 2 | grafana | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) Operational Tools | grafana | Will not fix | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) Operational Tools | grafana | Will not fix | n/a |
github.com/grafana/grafana
Go
Introduced 5.0.0+incompatible Fixed 5.2.3+incompatiblegithub.com/grafana/grafana
Go
Introduced 0 Fixed 4.6.4+incompatible
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/grafana/grafana | 5.0.0+incompatible | 5.2.3+incompatible |
| Go | github.com/grafana/grafana | 0 | 4.6.4+incompatible |
Remediation
Red Hat mitigation
As per upstream (https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix) * Switch to authentication mechanism other than LDAP or OAuth * Grafana should be isolated from public networks
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (67 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 64.28% (0.64284) | 99.21th | v5 (v2026.06.15) |
| Sep 22, 2026 | 64.28% (0.64284) | 99.19th | v5 (v2026.06.15) |
| Sep 21, 2026 | 55.42% (0.55417) | 99.02th | v5 (v2026.06.15) |
| Sep 6, 2026 | 64.28% (0.64284) | 99.17th | v5 (v2026.06.15) |
| Sep 5, 2026 | 55.42% (0.55417) | 98.99th | v5 (v2026.06.15) |
| Aug 30, 2026 | 64.28% (0.64284) | 99.17th | v5 (v2026.06.15) |
| Aug 28, 2026 | 55.42% (0.55417) | 98.99th | v5 (v2026.06.15) |
| Aug 24, 2026 | 64.28% (0.64284) | 99.17th | v5 (v2026.06.15) |
| Aug 23, 2026 | 55.42% (0.55417) | 98.99th | v5 (v2026.06.15) |
| Jun 15, 2026 | 64.28% (0.64284) | 99.13th | v5 (v2026.06.15) |
| Mar 4, 2026 | 80.08% (0.80081) | 99.08th | v4 (v2025.03.14) |
| Mar 1, 2026 | 78.75% (0.78751) | 99.03th | v4 (v2025.03.14) |
| Feb 4, 2026 | 80.08% (0.80081) | 99.08th | v4 (v2025.03.14) |
| Feb 1, 2026 | 78.75% (0.78751) | 99.02th | v4 (v2025.03.14) |
| Jan 30, 2026 | 80.08% (0.80081) | 99.07th | v4 (v2025.03.14) |
| Jan 4, 2026 | 76.77% (0.76773) | 98.90th | v4 (v2025.03.14) |
| Jan 1, 2026 | 75.18% (0.75179) | 98.84th | v4 (v2025.03.14) |
| Dec 28, 2025 | 76.77% (0.76773) | 98.90th | v4 (v2025.03.14) |
| Dec 27, 2025 | 74.58% (0.74580) | 98.81th | v4 (v2025.03.14) |
| Dec 4, 2025 | 76.77% (0.76773) | 98.89th | v4 (v2025.03.14) |
| Dec 1, 2025 | 75.18% (0.75179) | 98.83th | v4 (v2025.03.14) |
| Nov 21, 2025 | 76.77% (0.76773) | 98.89th | v4 (v2025.03.14) |
| Nov 18, 2025 | 72.48% (0.72481) | 98.83th | v4 (v2025.03.14) |
| Nov 4, 2025 | 76.77% (0.76773) | 98.89th | v4 (v2025.03.14) |
| Nov 1, 2025 | 75.18% (0.75179) | 98.83th | v4 (v2025.03.14) |
| Oct 28, 2025 | 76.77% (0.76773) | 98.89th | v4 (v2025.03.14) |
| Oct 27, 2025 | 74.58% (0.74580) | 98.80th | v4 (v2025.03.14) |
| Oct 4, 2025 | 76.77% (0.76773) | 98.91th | v4 (v2025.03.14) |
| Sep 4, 2025 | 74.58% (0.74580) | 98.81th | v4 (v2025.03.14) |
| Sep 1, 2025 | 72.82% (0.72824) | 98.74th | v4 (v2025.03.14) |
| Aug 4, 2025 | 74.58% (0.74580) | 98.80th | v4 (v2025.03.14) |
| Aug 1, 2025 | 72.82% (0.72824) | 98.73th | v4 (v2025.03.14) |
| Jul 30, 2025 | 74.58% (0.74580) | 98.79th | v4 (v2025.03.14) |
| Jul 4, 2025 | 77.23% (0.77226) | 98.91th | v4 (v2025.03.14) |
| Jul 1, 2025 | 75.67% (0.75667) | 98.84th | v4 (v2025.03.14) |
| Jun 4, 2025 | 77.45% (0.77450) | 98.91th | v4 (v2025.03.14) |
| Jun 1, 2025 | 75.91% (0.75908) | 98.84th | v4 (v2025.03.14) |
| May 4, 2025 | 77.45% (0.77450) | 98.91th | v4 (v2025.03.14) |
| May 1, 2025 | 75.91% (0.75908) | 98.84th | v4 (v2025.03.14) |
| Apr 14, 2025 | 77.45% (0.77450) | 98.93th | v4 (v2025.03.14) |
| Mar 30, 2025 | 78.92% (0.78919) | 99.00th | v4 (v2025.03.14) |
| Mar 29, 2025 | 84.27% (0.84274) | 99.14th | v4 (v2025.03.14) |
| Mar 28, 2025 | 78.92% (0.78919) | 98.99th | v4 (v2025.03.14) |
| Mar 27, 2025 | 84.27% (0.84274) | 99.24th | v4 (v2025.03.14) |
| Mar 20, 2025 | 81.86% (0.81859) | 99.19th | v4 (v2025.03.14) |
| Mar 19, 2025 | 84.27% (0.84274) | 99.27th | v4 (v2025.03.14) |
| Mar 17, 2025 | 81.86% (0.81859) | 99.15th | v4 (v2025.03.14) |
| Dec 17, 2024 | 6.16% (0.06160) | 93.47th | v3 (v2023.03.01) |
| Dec 12, 2024 | 1.62% (0.01619) | 87.99th | v3 (v2023.03.01) |
| Jun 13, 2024 | 1.42% (0.01421) | 86.56th | v3 (v2023.03.01) |
| Apr 17, 2024 | 1.69% (0.01691) | 87.56th | v3 (v2023.03.01) |
| Feb 29, 2024 | 2.54% (0.02535) | 89.87th | v3 (v2023.03.01) |
| Jan 20, 2024 | 2.36% (0.02364) | 88.74th | v3 (v2023.03.01) |
| Dec 8, 2023 | 3.43% (0.03428) | 90.43th | v3 (v2023.03.01) |
| Sep 27, 2023 | 3.44% (0.03437) | 90.32th | v3 (v2023.03.01) |
| Aug 23, 2023 | 3.35% (0.03352) | 90.16th | v3 (v2023.03.01) |
| Jul 21, 2023 | 3.56% (0.03563) | 90.36th | v3 (v2023.03.01) |
| Jun 19, 2023 | 3.50% (0.03497) | 90.20th | v3 (v2023.03.01) |
| May 8, 2023 | 3.45% (0.03453) | 90.07th | v3 (v2023.03.01) |
| Mar 12, 2023 | 2.74% (0.02738) | 88.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.95% (0.01949) | 86.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 76.94% (0.76943) | 99.40th | v2 (v2022.01.01) |
| Feb 4, 2022 | 76.94% (0.76943) | 99.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 25.84% (0.25842) | 95.62th | v1 |
| Jan 6, 2022 | 25.84% (0.25842) | 95.57th | v1 |
| Sep 1, 2021 | 25.84% (0.25842) | 98.30th | v1 |
| Apr 14, 2021 | 25.84% (0.25842) | 0.00th | v1 |
References (12)
- http://www.securityfocus.com/bid/105184 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3829 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0019 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-15727 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1624088 Issue Tracking
- https://github.com/advisories/GHSA-rgjg-66cx-5x9m Advisory
- https://github.com/grafana/grafana/commit/7baecf0d0deae0d865e45cf03e082bc0db3f28c3
- https://github.com/grafana/grafana/commit/df83bf10a225811927644bdf6265fa80bdea9137
- https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix/ x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-15727
- https://www.cve.org/CVERecord?id=CVE-2018-15727
- https://www.securityfocus.com/bid/105184
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105184 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2018:3829 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/errata/RHSA-2019:0019 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-15727 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1624088 | Issue Tracking | |
| https://github.com/advisories/GHSA-rgjg-66cx-5x9m | Advisory | |
| https://github.com/grafana/grafana/commit/7baecf0d0deae0d865e45cf03e082bc0db3f28c3 | ||
| https://github.com/grafana/grafana/commit/df83bf10a225811927644bdf6265fa80bdea9137 | ||
| https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix/ | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-15727 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-15727 | ||
| https://www.securityfocus.com/bid/105184 |
Change history (0)
No recorded changes yet.