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CVE-2016-4340

44
FAUCET Score

CVE-2016-4340 describes a critical privilege escalation vulnerability in GitLab versions 8.2.0 through 8.7.0, and various sub-versions, where authenticated users can impersonate any other user, including administrators, through unspecified vectors. This flaw carries a CVSSv3 score of 8.8 (High), indicating a network-based attack with low privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. While not listed on the KEV catalog, an ExploitDB entry exists (EDB-40236), and the vulnerability garnered significant community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
8.2.0CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:8.2.0:*:*:*:*:*:*:*
8.2.1CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:8.2.1:*:*:*:*:*:*:*
8.2.2CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:8.2.2:*:*:*:*:*:*:*
8.2.3CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:8.2.3:*:*:*:*:*:*:*
8.2.4CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:8.2.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
10.14%
Probability of exploitation in next 30 days
EPSS Percentile
95.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-40236 · Aug 15, 2016
This CVE's current EPSS score of 0.1014 is in the 94th percentile among its peer group of 17,805 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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