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Vulnerability record · CVE-2016-4340 · published 23 January 2017

CVE-2016-4340: Gitlab permissions and access controls vulnerability

Gitlab · Gitlab

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.

8.8 CVSS 3.0 High EPSS 10% · top 4.5% CWE-264 · Permissions and access controls
8.8CVSS 3.0 base score, v2 6.5
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/138368/GitLab-Impersonate-Privilege-Escalation.html ExploitThird Party AdvisoryVDB Entry
https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/ MitigationPatchVendor Advisory
https://gitlab.com/gitlab-org/gitlab-ce/issues/15548 Issue TrackingPatchVendor Advisory
https://www.exploit-db.com/exploits/40236/ ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/138368/GitLab-Impersonate-Privilege-Escalation.html ExploitThird Party AdvisoryVDB Entry
https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/ MitigationPatchVendor Advisory
https://gitlab.com/gitlab-org/gitlab-ce/issues/15548 Issue TrackingPatchVendor Advisory
https://www.exploit-db.com/exploits/40236/ ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-4340), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.