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PatchSiren cyber security CVE debrief

CVE-2026-10087 GitLab CVE debrief

CVE-2026-10087 is a HIGH-severity vulnerability in GitLab EE. An authenticated user with developer-role permissions could execute arbitrary client-side code on behalf of a targeted user due to improper input sanitization in the Analytics Dashboard. The CVSS score is 8.7.

Vendor
GitLab
Product
Unknown
CVSS
HIGH 8.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-15
Advisory published
2026-06-11
Advisory updated
2026-06-15

Who should care

Users of GitLab EE versions from 17.1 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 should be aware of this vulnerability and take action to remediate.

Technical summary

The vulnerability exists in GitLab EE due to improper input sanitization in the Analytics Dashboard. An authenticated user with developer-role permissions can execute arbitrary client-side code on behalf of a targeted user.

Defensive priority

HIGH

Recommended defensive actions

  • Update to GitLab EE version 18.10.8, 18.11.5, or 19.0.2 or later.
  • Review and restrict user permissions to prevent exploitation.

Evidence notes

GitLab has remediated the issue. References include GitLab release notes and HackerOne report.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-10087 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-10087

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-10087 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-10087

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.