PT-2026-40855 · Gitlab · Gitlab Ce/Ee

Published 2026-05-14 · Updated 2026-05-18 · CVE-2025-14870

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions GitLab CE/EE versions 18.5 through 18.9.6 GitLab CE/EE versions 18.10 through 18.10.5 GitLab CE/EE versions 18.11 through 18.11.2

Description An issue exists where an unauthenticated user can cause a denial of service by sending specially crafted JSON payloads. This is possible due to insufficient input validation.

Recommendations Update versions 18.5 through 18.9.6 to 18.9.7. Update versions 18.10 through 18.10.5 to 18.10.6. Update versions 18.11 through 18.11.2 to 18.11.3.

Exploit

Fix

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

BDU:2026-07010

BIT-GITLAB-2025-14870

CVE-2025-14870

Affected Products

Gitlab Ce/Ee

References · 11

• 🔥 https://hackerone.com/reports/3446641 · Exploit
• https://ubuntu.com/security/CVE-2025-14870 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-14870 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07010 · Security Note
• https://osv.dev/vulnerability/BIT-gitlab-2025-14870 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-14870 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-14870 · Security Note
• https://t.me/cveNotify/163404 · Telegram Post
• https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released · Note
• https://t.me/cveNotify/163738 · Telegram Post
• https://gitlab.com/gitlab-org/gitlab/-/work_items/584490 · Note