GitLab Community Edition/Enterprise Edition 13.9 Merge Request information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in GitLab Community Edition and Enterprise Edition 13.9. Affected by this issue is some unknown functionality of the component Merge Request Handler. Such manipulation leads to information disclosure. This vulnerability is referenced as CVE-2021-39911. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in GitLab Community Edition and Enterprise Edition 13.9 (Bug Tracking Software). It has been rated as problematic. Affected by this issue is an unknown functionality of the component Merge Request Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

An improper access control flaw in all versions of GitLab CE/EE starting from 13.9 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 exposes private email address of Issue and Merge Requests assignee to Webhook data consumers

The weakness was published 11/05/2021 as 29747. The advisory is available at gitlab.com. This vulnerability is handled as CVE-2021-39911 since 08/23/2021. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.4
VulDB Meta Temp Score: 3.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 1.7
CNA Vector (GitLab Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Partially
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2021 🔍
11/05/2021 +74 days 🔍
11/05/2021 +0 days 🔍
06/12/2026 +1680 days 🔍

Sourcesinfo

Vendor: gitlab.com

Advisory: 29747
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-39911 (🔍)
GCVE (CVE): GCVE-0-2021-39911
GCVE (VulDB): GCVE-100-186110

Entryinfo

Created: 11/05/2021 11:43
Updated: 06/12/2026 20:26
Changes: 11/05/2021 11:43 (50), 11/10/2021 02:39 (1), 06/12/2026 20:26 (34)
Complete: 🔍
Cache ID: 216::103

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