High 8.7Published Jun 25, 2026

CVE-2026-10086Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

Updated under an hour ago (Oct 26, 2026, 3:50 PM ET)

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It affects GitLab. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary client-side code in the context of another user's session, due to improper sanitization of user-supplied input.

CVSS: 8.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitLab
NVD analysis: Analyzed
Record last updated: Jun 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

GitLab GitLab gitlab:gitlab	from 16.4 before 18.11.6; from 19.0 before 19.0.3; from 19.1 before 19.1.1	CNA record
gitlab gitlab gitlab:gitlab	from 16.4.0 before 18.11.6; from 19.0.0 before 19.0.3; 19.1.0	NVD

References

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/601634	broken-link
https://hackerone.com/reports/3734800	technical-description, exploit, permissions-required
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/	patch, release-notes, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.