CVE-2026-10087 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

High 8.7 Published 11 Jun 2026 Updated 11 Jun 2026

Authenticated developers can execute arbitrary client-side code on other users via the Analytics Dashboard in GitLab EE.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2026-10087?

CVE-2026-10087 is a high-severity cross-site scripting vulnerability in Gitlab Gitlab, published on 11 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

GitLab has remediated an issue in GitLab EE affecting all versions from 17.1 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 with developer-role permissions to execute arbitrary client-side code on behalf of a targeted user due to improper input sanitization in the Analytics Dashboard.

Weakness: CWE-79

Which versions are affected by CVE-2026-10087?

1 open source package ship an affected version, including gitlab. It affects 1 product.

Package	Affected	Fixed in
`gitlab` Bitnami	From `17.1.0`	`18.10.8, 18.11.5, 19.0.2`

Products include Gitlab Gitlab.

How do I fix CVE-2026-10087?

Upgrade gitlab to a fixed version for your release line: 18.10.8, 18.11.5 or 19.0.2.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-10087 being exploited?

There is no known exploitation of CVE-2026-10087 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2026-10087, GHSA-vcvx-j5vc-8jhr.