---
id: CVE-2025-14870
title: >-
  GitLab has remediated an issue in GitLab CE/EE affecting all versions from
  18.5 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could
  have allowed an unauthenticated user to cause denial of service by sending
  specially…
summary: >-
  GitLab has remediated an issue in GitLab CE/EE affecting all versions from
  18.5 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could
  have allowed an unauthenticated user to cause denial of service by sending
  specially…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: gitlab
product: gitlab
affected:
  - 'gitlab >= 18.5.0, < 18.9.7'
  - 'gitlab >= 18.10.0, < 18.10.6'
  - 'gitlab >= 18.11.0, < 18.11.3'
patched:
  - gitlab 18.11.3
published: '2026-05-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14870'
references:
  - url: >-
      https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/
    label: cve@gitlab.com
  - url: 'https://gitlab.com/gitlab-org/gitlab/-/work_items/584490'
    label: cve@gitlab.com
  - url: 'https://hackerone.com/reports/3446641'
    label: cve@gitlab.com
tags:
  - nvd
epss: 0.00339
epssPercentile: 0.2554
ingestedAt: '2026-10-14T13:30:58.499Z'
---

## Overview

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by sending specially crafted JSON payloads due to insufficient input validation.

## Affected

- `gitlab >= 18.5.0, < 18.9.7`
- `gitlab >= 18.10.0, < 18.10.6`
- `gitlab >= 18.11.0, < 18.11.3`

## Remediation

Upgrade past the affected range:

- `gitlab 18.11.3`