CVE-2026-9694: Improper Neutralization of Substitution Characters in GitLab
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 18.10.8 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 18.11.5 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.0.2
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9694?
The severity of CVE-2026-9694 is medium with a score of 4.3.
How do I fix CVE-2026-9694?
To fix CVE-2026-9694, you should upgrade to GitLab versions 18.10.8, 18.11.5, or 19.0.2 and above.
What is the impact of CVE-2026-9694?
CVE-2026-9694 could allow an unauthenticated user to impersonate the GitLab Support Bot and inject arbitrary content.
Which versions of GitLab are affected by CVE-2026-9694?
CVE-2026-9694 affects all GitLab CE/EE versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2.
What type of vulnerability is CVE-2026-9694?
CVE-2026-9694 is characterized as an improper neutralization of substitution characters vulnerability.