HIGH
The impersonate feature in Gitlab 8.7.0, 8.6.0 through 8.6.7, 8.5.0 through 8.5.11, 8.4.0 through 8.4.9, 8.3.0 through 8.3.8, and 8.2.0 through 8.2.4 allows remote authenticated users to "log in" as any other user via unspecified vectors
Published Jan 23, 2017
8.8
HIGHCVSS 3.0
EPSS 10.14%
Description
The impersonate feature in Gitlab 8.7.0, 8.6.0 through 8.6.7, 8.5.0 through 8.5.11, 8.4.0 through 8.4.9, 8.3.0 through 8.3.8, and 8.2.0 through 8.2.4 allows remote authenticated users to "log in" as any other user via unspecified vectors.
Affected products
No data.
OR
- 8.2.0
- 8.2.1
- 8.2.2
- 8.2.3
- 8.2.4
- 8.3.0
- 8.3.1
- 8.3.2
- 8.3.3
- 8.3.4
- 8.3.5
- 8.3.6
- 8.3.7
- 8.3.8
- 8.4.0
- 8.4.1
- 8.4.2
- 8.4.3
- 8.4.4
- 8.4.5
- 8.4.6
- 8.4.7
- 8.4.8
- 8.4.9
- 8.5.0
- 8.5.1
- 8.5.2
- 8.5.3
- 8.5.4
- 8.5.5
- 8.5.6
- 8.5.7
- 8.5.8
- 8.5.9
- 8.5.10
- 8.5.11
- 8.6.0
- 8.6.1
- 8.6.2
- 8.6.3
- 8.6.4
- 8.6.5
- 8.6.6
- 8.6.7
- 8.7.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.5 MEDIUM NVD
AV:N/AC:L/Au:S/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
10.14% 0.10143
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.10143
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.14% (0.10143) | 95.52th | v5 (v2026.06.15) |
| Sep 22, 2026 | 10.14% (0.10143) | 95.44th | v5 (v2026.06.15) |
| Sep 21, 2026 | 7.77% (0.07773) | 94.46th | v5 (v2026.06.15) |
| Sep 6, 2026 | 10.14% (0.10143) | 95.34th | v5 (v2026.06.15) |
| Sep 5, 2026 | 7.77% (0.07773) | 94.34th | v5 (v2026.06.15) |
| Aug 30, 2026 | 10.14% (0.10143) | 95.31th | v5 (v2026.06.15) |
| Aug 28, 2026 | 7.77% (0.07773) | 94.30th | v5 (v2026.06.15) |
| Aug 24, 2026 | 10.14% (0.10143) | 95.28th | v5 (v2026.06.15) |
| Aug 23, 2026 | 7.77% (0.07773) | 94.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.14% (0.10143) | 95.04th | v5 (v2026.06.15) |
| May 17, 2025 | 2.79% (0.02790) | 85.34th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.05% (0.05050) | 88.77th | v4 (v2025.03.14) |
| Mar 29, 2025 | 15.45% (0.15449) | 91.12th | v4 (v2025.03.14) |
| Mar 24, 2025 | 5.05% (0.05050) | 88.77th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.27% (0.06269) | 90.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.56% (0.02563) | 90.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.56% (0.02563) | 88.55th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.08% (0.08078) | 93.34th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.08% (0.08078) | 92.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.08% (0.08078) | 81.87th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://packetstormsecurity.com/files/138368/GitLab-Impersonate-Privilege-Escalation.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/ x_refsource_CONFIRMMitigationPatchVendor Advisory
- https://gitlab.com/gitlab-org/gitlab-ce/issues/15548 x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- https://www.exploit-db.com/exploits/40236/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/138368/GitLab-Impersonate-Privilege-Escalation.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/ | x_refsource_CONFIRMMitigationPatchVendor Advisory | |
| https://gitlab.com/gitlab-org/gitlab-ce/issues/15548 | x_refsource_CONFIRMIssue TrackingPatchVendor Advisory | |
| https://www.exploit-db.com/exploits/40236/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 23, 2017
Updated Aug 6, 2024
Reserved Apr 27, 2016
Link CVE-2016-4340
CISA Vulnrichment
Updated n/a