Improper Neutralization of Substitution Characters in GitLab_CVE-2026-9694

2.6 / 10

LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 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 unauthenticated user to impersonate the GitLab Support Bot and inject arbitrary content via a specially crafted Service Desk email reply due to improper neutralization in email template processing.

Basic Information

ID CVE-2026-9694

Source GitLab

Published Jun 11, 2026 at 10:19

Modified Jun 11, 2026 at 12:38

Affected Product

Vendor GitLab

Product GitLab

Version 15.9

Affected Versions GitLab GitLab 15.9
GitLab GitLab 18.11
GitLab GitLab 19.0

CWE Classification

CWE-153

References

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    "published": "2026-06-11T10:19:46.466Z",
    "modified": "2026-06-11T12:38:55.300Z",
    "type": "cve",
    "title": "Improper Neutralization of Substitution Characters in GitLab",
    "source": "GitLab",
    "references": "https://gitlab.com/gitlab-org/gitlab/-/work_items/601330\nhttps://hackerone.com/reports/3685720\nhttps://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/",
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    "cvss": {
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        "version": "3.1"
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