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PatchSiren cyber security CVE debrief

CVE-2026-1500 GitLab CVE debrief

CVE-2026-1500 is a medium-severity vulnerability affecting GitLab CE/EE versions from 17.10 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2. The issue could allow an authenticated user to cause denial of service due to uncontrolled resource consumption when processing a specially crafted file upload. The CVSS score for this vulnerability is 6.5, indicating a medium severity.

Vendor
GitLab
Product
Unknown
CVSS
MEDIUM 6.5
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 CE/EE versions from 17.10 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 steps to mitigate it.

Technical summary

The vulnerability is caused by uncontrolled resource consumption when processing a specially crafted file upload. This could allow an authenticated user to cause denial of service.

Defensive priority

medium

Recommended defensive actions

  • Update to a patched version of GitLab CE/EE (18.10.8, 18.11.5, or 19.0.2 or later)
  • Restrict file uploads to trusted users and validate file types

Evidence notes

Evidence for this CVE comes from the NVD and GitLab's official releases.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-1500 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-1500

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

  • CVE-2026-1500 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-1500

    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.