Vulnerability details
CVE-2026-10086
GitLab GitLab
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
CVSS 3.1
8.7High
Official description
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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 3.1 | CVEProject cvelistV5 (CNA) (GitLab) | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| GitLab | GitLab | 16.4 ≤ v < 18.11.6 | CVEProject cvelistV5 (CNA) |
| GitLab | GitLab | 19.0 ≤ v < 19.0.3 | CVEProject cvelistV5 (CNA) |
| GitLab | GitLab | 19.1 ≤ v < 19.1.1 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://gitlab.com/gitlab-org/gitlab/-/work_items/601634
- https://hackerone.com/reports/3734800 technical-descriptionexploitpermissions-required
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/
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Details
- Published
- 2026-06-25
- Last updated
- 2026-06-26
- State
- Published
- Assigner (CNA)
- GitLab
Exploit prediction (EPSS)
0.34%
Probability of exploitation in 30 days
28.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')