Review reviewHigh

CVE-2026-15975

GitLab GitLab, gitlab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.8 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an unauthenticated user to cause a denial of service due to insufficient resource throttling when processing merge request discussions.

CVSS
7.5
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.30
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.5

Vulnerability overview

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.8 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an unauthenticated user to cause a denial of service due to insufficient resource throttling when processing merge request discussions.

Affected product and versions

Product
GitLab GitLab, gitlab
Affected versions
>= 11.8 < 19.0.5, >= 19.1 < 19.1.3, >= 19.2 < 19.2.1, >= 11.8.0 < 19.0.5, >= 19.1.0 < 19.1.3, 19.2.0
Fixed versions
19.0.5, 19.1.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that GitLab GitLab, gitlab and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-770