CVE-2026-9694
Analyzed Analyzed - Analysis Complete

GitLab Support Bot Impersonation via Email Template Injection

Publication date: 2026-06-11

Last updated on: 2026-06-11

Assigner: GitLab Inc.

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.

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Meta Information

Published
2026-06-11
Last Modified
2026-06-11
Generated
2026-07-01
AI Q&A
2026-06-11
EPSS Evaluated
2026-06-30
NVD
CVE-2026-9694
EUVD
EUVD-2026-36224

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
gitlab gitlab From 15.9.0 (inc) to 18.10.8 (exc)
gitlab gitlab From 18.11.0 (inc) to 18.11.5 (exc)
gitlab gitlab From 19.0.0 (inc) to 19.0.2 (exc)
gitlab gitlab From 15.9.0 (inc) to 18.10.8 (exc)
gitlab gitlab From 18.11.0 (inc) to 18.11.5 (exc)
gitlab gitlab From 19.0.0 (inc) to 19.0.2 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-153 The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as substitution characters when they are sent to a downstream component.

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Executive Summary

This vulnerability affects GitLab Community Edition and Enterprise Edition versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2. Under certain conditions, it allows an unauthenticated user to impersonate the GitLab Support Bot by injecting arbitrary content through a specially crafted Service Desk email reply. This happens due to improper neutralization in the processing of email templates.

Impact Analysis

The vulnerability could allow an unauthenticated attacker to impersonate the GitLab Support Bot and inject arbitrary content into the system via Service Desk email replies. This could lead to misinformation, manipulation of support communications, or other unintended behaviors caused by the injected content.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade your GitLab CE/EE instance to a fixed version. Specifically, update to version 18.10.8 or later if you are on the 18.10 branch, 18.11.5 or later if on the 18.11 branch, or 19.0.2 or later if on the 19.0 branch.

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