GitLab Community Edition/Enterprise Edition up to 18.7.5/18.8.5/18.9.1 Private Project authorization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in GitLab Community Edition and Enterprise Edition up to 18.7.5/18.8.5/18.9.1. Impacted is an unknown function of the component Private Project Handler. This manipulation causes authorization. This vulnerability appears as CVE-2026-1663. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in GitLab Community Edition and Enterprise Edition up to 18.7.5/18.8.5/18.9.1. Affected by this vulnerability is some unknown functionality of the component Private Project Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect integrity. The summary by CVE is:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.4 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user with group import permissions to create labels in private projects due to improper authorization validation in the group import process under certain circumstances.

The weakness was presented by Go7F0. It is possible to read the advisory at hackerone.com. This vulnerability is known as CVE-2026-1663 since 01/29/2026. 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 vulnerability scanner Nessus provides a plugin with the ID 301879 (GitLab 14.4 < 18.7.6 / 18.8 < 18.8.6 / 18.9 < 18.9.2 (CVE-2026-1663)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 18.7.6, 18.8.6 or 18.9.2 eliminates this vulnerability. The upgrade is hosted for download at about.gitlab.com.

The vulnerability is also documented in the vulnerability database at Tenable (301879). Statistical analysis made it clear that VulDB provides the best quality for 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: 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
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 301879
Nessus Name: GitLab 14.4 < 18.7.6 / 18.8 < 18.8.6 / 18.9 < 18.9.2 (CVE-2026-1663)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Community Edition/Enterprise Edition 18.7.6/18.8.6/18.9.2

Timelineinfo

01/29/2026 CVE reserved
03/11/2026 +41 days Advisory disclosed
03/11/2026 +0 days VulDB entry created
03/14/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: gitlab.com

Advisory: hackerone.com
Researcher: Go7F0
Status: Confirmed

CVE: CVE-2026-1663 (🔒)
GCVE (CVE): GCVE-0-2026-1663
GCVE (VulDB): GCVE-100-350443

Entryinfo

Created: 03/11/2026 17:34
Updated: 03/14/2026 12:43
Changes: 03/11/2026 17:34 (66), 03/12/2026 05:21 (2), 03/14/2026 12:43 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!