GitLab Community Edition/Enterprise Edition up to 18.3.5/18.4.3/18.5.1 Websocket Connection insertion of sensitive information into sent data

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability was found in GitLab Community Edition and Enterprise Edition up to 18.3.5/18.4.3/18.5.1. It has been classified as problematic. Affected by this issue is some unknown functionality of the component Websocket Connection Handler. This manipulation causes insertion of sensitive information into sent data. This vulnerability is registered as CVE-2025-2615. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in GitLab Community Edition and Enterprise Edition up to 18.3.5/18.4.3/18.5.1. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component Websocket Connection Handler. The manipulation with an unknown input leads to a insertion of sensitive information into sent data vulnerability. The CWE definition for the vulnerability is CWE-201. The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor. As an impact it is known to affect confidentiality. The summary by CVE is:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.7 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2, that could have allowed a blocked user to access sensitive information by establishing GraphQL subscriptions through WebSocket connections.

The weakness was published by rogerace as 526360. It is possible to read the advisory at about.gitlab.com. This vulnerability is known as CVE-2025-2615 since 03/21/2025. The exploitation appears to be easy. The attack can be launched remotely. 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.

The vulnerability scanner Nessus provides a plugin with the ID 298863 (GitLab 16.7 < 18.3.6 / 18.4 < 18.4.4 / 18.5 < 18.5.2 (CVE-2025-2615)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 18.3.6, 18.4.4 or 18.5.2 eliminates this vulnerability. The upgrade is hosted for download at about.gitlab.com.

The vulnerability is also documented in the databases at Tenable (298863), EUVD (EUVD-2025-197690) and CERT Bund (WID-SEC-2025-2587). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Open Source GitLab

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CNA Base Score: 4.3
CNA Vector (GitLab): 🔒

CVSSv2info

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

Exploitinginfo

Class: Insertion of sensitive information into sent data
CWE: CWE-201 / CWE-200 / CWE-284
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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Nessus ID: 298863
Nessus Name: GitLab 16.7 < 18.3.6 / 18.4 < 18.4.4 / 18.5 < 18.5.2 (CVE-2025-2615)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Community Edition/Enterprise Edition 18.3.6/18.4.4/18.5.2

Timelineinfo

03/21/2025 CVE reserved
11/15/2025 +239 days Advisory disclosed
11/15/2025 +0 days VulDB entry created
02/13/2026 +90 days VulDB entry last update

Sourcesinfo

Vendor: gitlab.com

Advisory: 526360
Researcher: rogerace
Status: Confirmed

CVE: CVE-2025-2615 (🔒)
GCVE (CVE): GCVE-0-2025-2615
GCVE (VulDB): GCVE-100-332575
EUVD: 🔒
CERT Bund: WID-SEC-2025-2587 - GitLab: Mehrere Schwachstellen

Entryinfo

Created: 11/15/2025 14:43
Updated: 02/13/2026 13:20
Changes: 11/15/2025 14:43 (67), 11/15/2025 20:18 (1), 11/16/2025 19:01 (7), 11/20/2025 07:19 (11), 02/13/2026 13:20 (2)
Complete: 🔍
Cache ID: 216::103

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