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PatchSiren cyber security CVE debrief

CVE-2026-3553 GitLab CVE debrief

CVE-2026-3553 is a low-severity vulnerability in GitLab CE/EE that could allow an authenticated user to access confidential issue details due to incorrect authorization checks. The issue affects all versions from 12.0 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2.

Vendor
GitLab
Product
Unknown
CVSS
LOW 3.1
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 12.0 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 should apply patches to prevent potential unauthorized access to confidential issue details.

Technical summary

The vulnerability has a CVSS score of 3.1 and is classified as CWE-863. It was published on [cvePublishedAt] and last modified on [cveModifiedAt].

Defensive priority

Low

Recommended defensive actions

  • Apply patches to GitLab CE/EE versions from 12.0 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2.
  • Review and update access controls to ensure proper authorization checks are in place.

Evidence notes

Evidence of this vulnerability can be found at [resourceLinkAnnotations].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-3553 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-3553

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

  • CVE-2026-3553 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-3553

    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.