CVE-2025-10858

High

Description

An issue was discovered in GitLab CE/EE affecting all versions before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1 that allows unauthenticated users to cause a Denial of Service (DoS) condition while uploading specifically crafted large JSON files.

SeverityHigh
CVSS7.5
Exploit probability—
ProductGitlab
PublishedSep 26, 2025
First seenSep 26, 2025

How to fix

Update
  • gitlab gitlab18.2.7, 18.3.3 or later

Affected products

ProductAffected versionsFixed in
gitlab gitlabv < 18.2.7, 18.3.0 ≤ v < 18.3.3, 18.4.018.2.7, 18.3.3

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