GitLab up to 19.1.6/19.2.4/19.3.0 SCIM User Provisioning infinite loop

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.31

Summaryinfo

A vulnerability classified as problematic has been found in GitLab up to 19.1.6/19.2.4/19.3.0. Affected is an unknown function of the component SCIM User Provisioning. This manipulation causes infinite loop. The identification of this vulnerability is CVE-2025-10903. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in GitLab up to 19.1.6/19.2.4/19.3.0 and classified as problematic. Affected by this vulnerability is some unknown processing of the component SCIM User Provisioning. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability. The summary by CVE is:

GitLab has remediated an issue in GitLab EE affecting all versions from 11.10 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user could have caused denial of service, due to an unbounded loop triggered by specially crafted input in the SCIM user provisioning feature.

It is possible to read the advisory at hackerone.com. This vulnerability is known as CVE-2025-10903 since 09/24/2025. 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 T1499 according to MITRE ATT&CK.

Upgrading to version 19.1.7, 19.2.5 or 19.3.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-3029). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Open Source GitLab

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

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

CNA Base Score: 6.5
CNA Vector (GitLab): 🔒

CVSSv2info

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

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
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: GitLab 19.1.7/19.2.5/19.3.1

Timelineinfo

09/24/2025 CVE reserved
08/26/2026 +336 days Advisory disclosed
08/26/2026 +0 days VulDB entry created
08/26/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: hackerone.com
Status: Confirmed

CVE: CVE-2025-10903 (🔒)
GCVE (CVE): GCVE-0-2025-10903
GCVE (VulDB): GCVE-100-395779
CERT Bund: WID-SEC-2026-3029 - GitLab: Mehrere Schwachstellen

Entryinfo

Created: 08/26/2026 15:54
Updated: 08/26/2026 21:31
Changes: 08/26/2026 15:54 (63), 08/26/2026 21:31 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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