GitLab Community Edition/Enterprise Edition up to 18.8.6/18.9.2/18.10.0 Webhook Configuration improper validation of specified quantity in input

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in GitLab Community Edition and Enterprise Edition up to 18.8.6/18.9.2/18.10.0. The impacted element is an unknown function of the component Webhook Configuration Handler. Performing a manipulation results in improper validation of specified quantity in input. This vulnerability is reported as CVE-2025-13078. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in GitLab Community Edition and Enterprise Edition up to 18.8.6/18.9.2/18.10.0. This affects an unknown code of the component Webhook Configuration Handler. The manipulation with an unknown input leads to a improper validation of specified quantity in input vulnerability. CWE is classifying the issue as CWE-1284. The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties. This is going to have an impact on availability. The summary by CVE is:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to cause a denial of service due to excessive resource consumption when processing certain webhook configuration inputs.

The weakness was disclosed by Lucky_Luke. The advisory is shared at hackerone.com. This vulnerability is uniquely identified as CVE-2025-13078 since 11/12/2025. 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 18.8.7, 18.9.3 or 18.10.1 eliminates this vulnerability. The upgrade is hosted for download at about.gitlab.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

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

Exploitinginfo

Class: Improper validation of specified quantity in input
CWE: CWE-1284 / CWE-703
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: Community Edition/Enterprise Edition 18.8.7/18.9.3/18.10.1

Timelineinfo

11/12/2025 CVE reserved
03/25/2026 +133 days Advisory disclosed
03/25/2026 +0 days VulDB entry created
03/31/2026 +6 days VulDB entry last update

Sourcesinfo

Vendor: gitlab.com

Advisory: hackerone.com
Researcher: Lucky_Luke
Status: Confirmed

CVE: CVE-2025-13078 (🔒)
GCVE (CVE): GCVE-0-2025-13078
GCVE (VulDB): GCVE-100-353217

Entryinfo

Created: 03/25/2026 18:41
Updated: 03/31/2026 05:06
Changes: 03/25/2026 18:41 (66), 03/31/2026 05:06 (1)
Complete: 🔍
Cache ID: 216:3D7:103

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