Insertion of Sensitive Information Into Sent Data in GitLab

published 2023-07-13 3 y ago modified 2026-09-10 59 d ago also BIT-gitlab-2023-2620 , EUVD-2023-34091

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.1 prior to 15.11.10, all versions from 16.0 prior to 16.0.6, all versions from 16.1 prior to 16.1.1. A maintainer could modify a webhook URL to leak masked webhook secrets by manipulating other masked portions. This addresses an incomplete fix for CVE-2023-0838.

Patch / fix

fixed in 2

bitnami gitlab 15.11.10, 16.0.6, 16.1.1
GitLab GitLab 15.11.10, 16.0.6, 16.1.1

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-11-06)

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

hackerone.com https://hackerone.com/reports/1976206 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
NVD	3.1	3.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
OSV	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	gitlab	>=15.1.0, <15.11.10 >=16.0.0, <16.0.6 >=16.1.0, <16.1.1	15.11.10 16.0.6 16.1.1

Affected products

GitLab GitLab

Classification

Weakness

CWE-201 Insertion of Sensitive Information Into Sent Data

Technology feeds

GitLab rss critical rss

References

hackerone.com /reports/1976206
technical-description, exploit, third-party-advisory, advisory
gitlab.com /gitlab-org/gitlab/-/issues/410433
issue-tracking, broken-link, vendor-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2023-2620
web

Sources

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Enhance with deb and rpm package type records.

Summary