CVE-2023-3906 | BDVDB-2026-212877 Detail

GitLabGitLab

Description#

An input validation issue in the asset proxy in GitLab EE, affecting all versions from 12.3 prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1, allowed an authenticated attacker to craft image urls which bypass the asset proxy.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-1287 Improper Validation of Specified Type of Input

References#

Exploit#

https://hackerone.com/reports/2071411

History#

Version 12023-09-29Record published in the CVE List.
Version 22026-08-14Most recent update recorded in the CVE List.

Published

Published: 2023-09-29
Last modified: 2026-08-14

Vendor information

Vendor: GitLab
Product: GitLab

All GitLab vulnerabilities

Score

3.5 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 47.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 12.3 and < 16.2.8
Fixed
16.2.8
Vulnerable
>= 16.3 and < 16.3.5
Fixed
16.3.5
Vulnerable
>= 16.4 and < 16.4.1
Fixed
16.4.1

Scoring System

CVSS v4.0

Not available

CVSS v3.1

3.5 Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	Required
Scope	Unchanged
Confidentiality	Low
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).