GitLab up to 15.8.4/15.9.3/15.10.0 Masked Webhook Secret information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in GitLab up to 15.8.4/15.9.3/15.10.0. This vulnerability affects unknown code of the component Masked Webhook Secret Handler. Performing a manipulation results in information disclosure. This vulnerability was named CVE-2023-0838. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in GitLab up to 15.8.4/15.9.3/15.10.0 (Bug Tracking Software). This affects some unknown processing of the component Masked Webhook Secret Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

An issue has been discovered in GitLab affecting versions starting from 15.1 before 15.8.5, 15.9 before 15.9.4, and 15.10 before 15.10.1. A maintainer could modify a webhook URL to leak masked webhook secrets by adding a new parameter to the url. This addresses an incomplete fix for CVE-2022-4342.

The weakness was presented 04/06/2023 as 391685. It is possible to read the advisory at gitlab.com. This vulnerability is uniquely identified as CVE-2023-0838 since 02/15/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 15.8.5, 15.9.4 or 15.10.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-12839). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.8
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (GitLab Inc.): 🔍

CVSSv2info

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

Exploitinginfo

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

Physical: No
Local: No
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GitLab 15.8.5/15.9.4/15.10.1

Timelineinfo

02/15/2023 🔍
04/06/2023 +49 days 🔍
04/06/2023 +0 days 🔍
07/12/2025 +828 days 🔍

Sourcesinfo

Advisory: 391685
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2023-0838 (🔍)
GCVE (CVE): GCVE-0-2023-0838
GCVE (VulDB): GCVE-100-225063
EUVD: 🔍

Entryinfo

Created: 04/06/2023 10:15
Updated: 07/12/2025 20:08
Changes: 04/06/2023 10:15 (52), 04/23/2023 09:16 (10), 07/12/2025 20:08 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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