GitLab Enterprise Edition up to 18.8.8/18.9.4/18.10.2 Email Address authorization

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in GitLab Enterprise Edition up to 18.8.8/18.9.4/18.10.2. This affects an unknown function of the component Email Address Handler. Performing a manipulation results in authorization. This vulnerability is reported as CVE-2025-9484. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GitLab Enterprise Edition up to 18.8.8/18.9.4/18.10.2. It has been classified as problematic. This affects some unknown processing of the component Email Address Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality. The summary by CVE is:

GitLab has remediated an issue in GitLab EE affecting all versions from 16.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that under certain circumstances could have allowed an authenticated user to have access to other users' email addresses via certain GraphQL queries.

The weakness was disclosed by Mateuszek as 565363. The advisory is shared at gitlab.com. This vulnerability is uniquely identified as CVE-2025-9484 since 08/26/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 18.8.9, 18.9.5 or 18.10.3 eliminates this vulnerability. The upgrade is hosted for download at about.gitlab.com.

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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: 4.3
VulDB Meta Temp Score: 4.2

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

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: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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: Enterprise Edition 18.8.9/18.9.5/18.10.3

Timelineinfo

08/26/2025 CVE reserved
04/09/2026 +226 days Advisory disclosed
04/09/2026 +0 days VulDB entry created
04/09/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: gitlab.com

Advisory: 565363
Researcher: Mateuszek
Status: Confirmed

CVE: CVE-2025-9484 (🔒)
GCVE (CVE): GCVE-0-2025-9484
GCVE (VulDB): GCVE-100-356397

Entryinfo

Created: 04/09/2026 02:14
Changes: 04/09/2026 02:14 (67)
Complete: 🔍
Cache ID: 216:09C:103

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