CVE-2025-2934

MEDIUM

GitLab 5.2-18.2.7, 18.3-18.3.3, 18.4-18.4.1 - Authenticated Denial of Service via Malicious Webhook Endpoint

Title source: llm
STIX 2.1

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 5.2 prior to 18.2.8, 18.3 prior to 18.3.4, and 18.4 prior to 18.4.2 that could have allowed an authenticated attacker to create a denial of service condition by configuring malicious webhook endpoints that send crafted HTTP responses.

References (3)

Core 3
Core References
Broken Link issue-tracking permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/528979
Permissions Required technical-description exploit permissions-required
https://hackerone.com/reports/3058791

Scores

CVSS v3 4.3
EPSS 0.0009
EPSS Percentile 25.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (1)
gitlab/gitlab 5.2.0 - 18.2.8 (2 CPE variants)
Published Oct 09, 2025
Tracked Since Feb 18, 2026