CVE-2026-8589

HIGH

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

Title source: cna
STIX 2.1

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 13.1.4 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to add unauthorized email addresses to a targeted user's account due to improper sanitization of user-supplied input in certain group setting fields.

References (3)

Core 3

Scores

CVSS v3 7.3
EPSS 0.0043
EPSS Percentile 34.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (4)
GitLab/GitLab 13.1.4 - 18.10.8
gitlab/gitlab 13.1.4 - 18.10.8 (2 CPE variants)
GitLab/GitLab 18.11 - 18.11.5
GitLab/GitLab 19.0 - 19.0.2
Published Jun 11, 2026
Tracked Since Jun 11, 2026