An authentication issue was discovered in GitLab that allowed a bypass of email verification.

published 2019-09-09 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-15055

cvss: 7.2; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits: 0; none known

An authentication issue was discovered in GitLab that allowed a bypass of email verification. This was addressed in GitLab 12.1.2 and 12.0.4.

Exploit prediction

1.70% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

hackerone.com https://hackerone.com/reports/565883 referenced PoC, tagged "exploit" by a source, unverified
gitlab.com https://gitlab.com/gitlab-org/gitlab-ee/issues/11643 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

n/a gitlab.com

Classification

Weakness

CWE-288 Authentication Bypass Using an Alternate Path or Channel
CWE-287 Improper Authentication

Technology feeds

GitLab rss critical rss

References

hackerone.com /reports/565883
exploit, issue-tracking, third-party-advisory
gitlab.com /gitlab-org/gitlab-ee/issues/11643
exploit, issue-tracking, vendor-advisory

Sources

CVE List CVE-2019-5473
NVD CVE-2019-5473

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary